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论文题目：多相催化剂的制备
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一．课题名称………………………………………………2
二．课题概述：（约200～300字）………………………2
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一．课题名称
中文题名：多相催化剂的制备
英文题名：Preparation of heterogeneous catalysts
中文关键词：催化剂；多相系统
英文关键词：catalyst；polyphase system
二．课题概述：（约200～300字）
催化剂和反应物属不同物相，催化反应在其相界面上进行。用于多相反应体系的催化剂称为多相催化剂。一般为固体催化剂。固体酸、碱绝缘体氧化物，负载在适当载体上的过渡金属盐类及络合物，半导体型过渡金属氧化物和硫化物，过渡金属和ⅠB族金属等都属于多相催化剂。多相催化指催化剂自成一相的催化反应。多相催化作用是现代化学工业中一个极其重要的问题。其中气固相的催化作用应用得尤为广泛。催化剂制备中的沉淀、过滤与洗涤、干燥、成型、浸渍、焙烧、还原与硫化等单元操作，涉及其基本原理与科学基础，操作条件对催化剂性能的影响，工程问题与有关设备。
三．中国学术期刊全文数据库
1. 纳米Ce1MgxZr1-xO2固体多相催化剂的制备、表征及催化合成四氢苯并[b]吡喃衍生物的性能 【英文篇名】Preparation,Characterization,and Catalytic Application of a Nanosized Ce1MgxZr1-xO2 Solid Heterogeneous Catalyst for the Synthesis of Tetrahydrobenzo[b]pyran Derivatives
【作者】 Sandip RATHOD； Balasaheb ARBAD； Machhindra LANDE；
【Author】 Sandip RATHOD,Balasaheb ARBAD,Machhindra LANDE Department of Chemistry,Dr.Babasaheb Ambedkar Marathwada University,Aurangabad(M.S.) 431004,India
【机构】 Department of Chemistry,Dr.Babasaheb Ambedkar Marathwada University；
【摘要】 A series of Ce1MgxZr1-xO2 mixed metal oxides with different molar ratios were prepared by simple co-precipitation and were characterized by X-ray diffraction,infrared spectroscopy,scanning electron microscopy,energy dispersive spectroscopy,temperature-programmed desorption of CO2,and N2 adsorption techniques.The prepared materials were tested for catalytic activity by the synthesis of tetrahydrobenzo[b]pyran derivatives using a three component reaction(aromatic aldehydes,malononitrile,and dimedo... 更多还原
【Abstract】 A series of Ce1MgxZr1-xO2 mixed metal oxides with different molar ratios were prepared by simple co-precipitation and were characterized by X-ray diffraction,infrared spectroscopy,scanning electron microscopy,energy dispersive spectroscopy,temperature-programmed desorption of CO2,and N2 adsorption techniques.The prepared materials were tested for catalytic activity by the synthesis of tetrahydrobenzo[b]pyran derivatives using a three component reaction(aromatic aldehydes,malononitrile,and dimedo.
【关键词】 Ce1MgxZr1-xO2； magnesium oxide； co-precipitation； nanosized material； tetrahydrobenzo[b]pyran；
【Key words】 Ce1MgxZr1-xO2； magnesium oxide； co-precipitation； nanosized material； tetrahydrobenzo[b]pyran；
2. 松香酯化的多相催化剂的制备
【作者】 刘国桢； 曾广建； 王兴凤； 范德明； 朱瑞红；
【机构】 中国科学院广州化学研究所； 中国科学院广州化学研究所 510650； 510650；
【摘要】 采用浸渍法,将几种锌盐载于无机载体上,制得固体酸催化剂,进行非均相催化松香酯化反应。讨论浸渍液浓度,活化温度、催化剂的孔容、形状、表面酸强度对催化剂活性的影响。 更多还原
【关键词】 催化剂性能
3. 载体、金属-载体相互作用与多相催化剂的制备
【英文题名】SUPPORT,METAL-SUPPORT INTERACTION AND PREPARATION OF HETEROGENEOUS CATALYSTS
【作者】 罗锡辉； 何金海；
【Author】 LUO Xi hui,HE Jin hai (Fushun Research Institute of Petroleum and Petrochemicals,SINOPEC,Fushun 113001,China)
【机构】 中国石油化工股份有限公司抚顺石油化工研究院； 中国石油化工股份有限公司抚顺石油化工研究院 辽宁抚顺113001； 辽宁抚顺113001；
【摘要】 对多相 (非均相 )催化剂主要是Mo(W )Ni(Co) /Al2 O3 加氢处理催化剂和PtRe/Al2 O3 催化重整催化剂的制备研究作一概述。讨论的重点集中在原子水平上研究载体的性质、金属 载体之间的相互作用 ,及其对载体和相应催化剂的表面性质或表面结构 (形貌 )的影响。除了采用TPR、DRS、ESCA、IR和微型反应色谱等技术之外 ,还采用了一种新的表面测试技术PASCA (Positronannihilationspectroscopyforchemicalanalysis)来表征这两类催化剂。基于这些研究结果 ,提出了开发新型加氢处理和催化重整催化剂的总体思路。 更多还原
【Abstract】 This contribution is an attempt to make an overview in studying and preparing heterogeneous catalysts,particularly associating Mo(W)Ni(Co)/Al 2O 3 hydrotreating catalysts and PtRe/Al 2O 3 catalytic reforming catalysts. The discussion is centered on support,metal support interaction and their effects on the nature of surface phase (phases) or surface morphology of support and the related catalysts based on the atomic scale. A new surface technique,PASCA (Positron annihilation spectroscopy for che... 更多还原
【关键词】 金属-载体相互作用； PASCA； 加氢处理； 催化重整；
【Key words】 metal support interaction； PASCA； hydrotreating； catalytic reforming
4. 壳聚糖希夫碱铜多相催化剂的制备及其催化苯乙烯环丙烷反应的研究
【英文题名】Preparation of Chitosan Schiff-base Copper Complexes and Their Application as Catalysts for Heterogeneous Asymmetric Cyclopropanation of Styrene
【作者】 王红旺； 孙伟； 夏春谷； 徐利文； 李福伟；
【Author】 WANG Hong\\|wang, SUN Wei, XIA Chun\\|gu, XU Li\\|wen, LI Fu\\|wei itute of Chemical Physic, Chinese Academy of Science, Lanzhou, 730000, China.)
【机构】 中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室； 中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室 甘肃兰州730000； 甘肃兰州730000； 甘肃兰州730000；
【摘要】 采用均相和多相两种方法合成了壳聚糖希夫碱-Cu( )配合物,用于催化苯乙烯的不对称环丙烷反应,考察了不同制备方法和不同铜含量对催化剂催化性能的影响以及催化剂的重复使用情况.当催化剂的铜含量为4.4%时,得到20.7%的ee值. 更多还原
【Abstract】 Chitosan Schiff\\|base copper complexes synthesized from chitosan and derivatives of salicylaldehyde in homo\\| and hetero\\| methods with different copper\\|containing have been applied as the catalysts for asymmetric cyclopropanation of styrene with ethyl diazoacetate. It was found that when the copper\\|containing was almost the same, the catalysts synthesized in homo method were more favorable to the enantioselectivity of the reaction than the catalysts synthesized in hetero\\|method. 20.7% ee for... 更多还原
【关键词】 壳聚糖； 希夫碱； 铜； 不对称环丙烷化； 苯乙烯；
【Key words】 Chitosan； Schiff base； Copper； Asymmetric cyclopropanation
5. 活性组分在载体表面的分散状态
【英文题名】The dispersion of the active component on the surface of the carrier
【作者】 邓存；
【Author】 DENG Cun(Department of Chemistry,Ningde Teachers College,Ningde Fujian 352100,China)
【机构】 宁德师范高等专科学校化学系 福建宁德352100；
【摘要】 许多催化剂的活性组分可在载体表面自发分散.XRD,LRS和XPS等技术可用于研究活性组分在载体表面的分散状态,并测得相应的分散阈值.结果表明,当活性组分含量低于其分散阈值时,它在载体表面呈单层但非密置单层分散,逾此阈值时出现晶相.自发分散效应可以称为自发单层分散原理,这一自发单层分散原理可用于解释和改进多相催化剂制备工艺条件、解决相关的表面结构问题. 更多还原
【Abstract】 The active component(e.g.salts and oxides of transition metals)of many catalysts will disperse spontaneously onto the surface of the carrier.Technigues of XRD,LRS and XPS,etc.were employed in examining the dispersion of the active component on the surface of the carrier,and the relevant dispersion thresholds(i.e.the experimental maximum dispersion capacity)were measured.The results provide evidence that when the active component content is less than the threshold of the active component disperse... 更多还原
【关键词】 活性组分； 分散状态； XRD； 分散阈值； 自发单层分散原理； 应用；
【Key words】 active component； dispersion； X-ray diffraction； dispersion thresholds； principles of the sponuaneous monolayer distribution； application
6. 固体催化剂制备技术进展——第五届国际多相催化剂制备科学基础学术会议介绍
【作者】 钟顺和；
【机构】 天津大学 300072；
【摘要】 <正> 第五届国际多相催化剂制备科学基础学术会议于1990年9月3～6日在比利时新鲁旺天主大学举行。参加本届会议的有来自34个国家和地区的科技工作者304人。会上共发表论文76篇,其中宣读42篇,展讲34篇。这些论文涉及催化新材料开发8篇,催化剂载备技术15篇,金属催化剂制备技术18 更多还原
【关键词】 催化剂制备； 催化剂性能； 制备技术； 催化剂载体； 分子筛催化剂； 双金属催化剂； 催化新材料； 择形选择性； 混合氧化物催化剂； 催化性能；
7. 多相硅氢加成催化剂的制备及应用
【英文题名】Preparation Methods and Application of Heterogeneous Catalysts for Hydrosilylation
【作者】 白赢； 彭家建； 厉嘉云； 来国桥； 李小年；
【Author】 Bai Ying1,2 Peng Jiajian2 Li Jiayun2 Lai Guoqiao1,2 Li Xiaonian1 (1.State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,Industrial Catalysis Institute, Zhejiang University of Technology,Hangzhou 310032,China; 2.Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education,Hangzhou Normal University,Hangzhou 310012,China)
【机构】 浙江工业大学工业催化研究所绿色化学合成技术国家重点实验室培育基地； 杭州师范大学有机硅化学及材料技术教育部重点实验室；
【摘要】 硅氢加成反应是有机硅化学领域最为重要的反应之一。自该反应于1947年被发现以来,大量的文献对其进行了报道。本文综述了近十年来应用于硅氢加成反应的各类负载型催化剂的研究进展,介绍了活性炭、二氧化硅、分子筛等负载过渡金属催化剂,重点介绍了有机-无机杂化载体负载Pt、Rh、Au等多相催化剂的制备方法及其在硅氢加成反应中的应用,并分析了其催化作用机理;总结了功能高分子化合物负载过渡金属在硅氢加成反应中的研究,和新型含不同官能基团的离子液体络合金属催化剂的制备方法及其对不饱和烃与含氢硅烷的硅氢加成反应的催化性能,总结和讨论了催化反应机理的研究,并对多相硅氢加成催化剂的发展方向进行了分析和展望。 更多还原
【Abstract】 Hydrosilylation is one of the most important reactions in organo silicone chemistry,which can prepare functional silanes and silicon polymers.Since the first report in 1947,a lot of literatures relating to hydrosilylation reaction have been published.This review summarizes the novel progress in the synthesis methods and application of heterogeneous catalysts for hydrosilylation in the last decade.A variety of heterogeneous catalysts have been prepared by using a series of carriers such as active... 更多还原
【关键词】 硅氢加成； 多相催化剂； 加成；
【Key words】 hydrosilylation； heterogeneous catalysts； addition；
四．中国优秀博硕士学位论文全文数据库
1. 负载型分子筛催化剂的制备及乙烯齐聚性能研究
Preparation of Supported Molecular Sieve Catalysts and It’s Ethylene Oligomerization Performance
【作者】 张新年；
【导师】 张君涛；
【作者基本信息】 西安石油大学， 化学工艺， 2010， 硕士
【摘要】 α-烯烃(C6-C14)是一种重要的精细石油化工原料,尤其是各种高精尖机械设备所需要的高档润滑油基础油性能制高点——IV类基础油PAO的母体。通过乙烯齐聚反应来获得α-烯烃是当今世界应用最广泛和工艺最先进的a-烯烃生产方法。目前已工业化的乙烯齐聚工艺(包括Chevron、BP Amoco和Shell等三种典型工艺以及近年来出现的各种改进工艺)均采用均相法,这些已经经过多半个世纪不断研究改进的均相乙烯齐聚工艺,尽管都已具有α-烯烃选择性好、催化剂活性较高等优点,但它们一直存在产物与催化剂分离困难、催化剂废液难以处理回收等均相体系本身难以克服的问题,使其成本较高,且不利于节能环保。因此,研究开发以分子筛等为催化剂的多相乙烯齐聚工艺,以克服上述问题,将具有重要的现实意义。本文以十六烷基三甲基溴化铵(CTABr)为模板剂,正硅酸乙酯(TOES)为硅源,水合氯化铝为铝源,在氨水介质中采用水热法合成出了结晶度好、孔道排列有序度高的Al-MCM-41介孔分子筛；采用离子交换法制备得到了金属离子负载型MCM-41分子筛催化剂；并在固定床微反装置上研究了金属离子负载型MCM-41分子筛催化剂的乙烯齐聚反... 更多还原
【Abstract】 As an important petrochemical feedstock, a-olefins are conformed to be the perfect matrix of PAO which is the basal component of IV lubricating oil used in various kinds of advanced and sophisticated machines or equipments. Nowdays, ethylene oligomerization is the widest and most advanced method to produce a-olefins. The technologies which are industrialized, such as the process of Chevron, BP Amoco, Shell and so on, all utilize homogenious method which is studied and improved continuously for m... 更多还原
【关键词】 介孔分子筛； 合成； 表征； 乙烯齐聚； 多相催化剂；
【Key words】 Mesoporous molecular sieve； Synthesis； Characterization； heterogenous catalyst； Ethylene oligomerization；
2. 组合多相催化技术及其在甲烷与小分子化合物耦合反应中的应用
The Application of Combinatorial Catalysis in the Coupling Methane with Small Molecule Componds
【作者】 王华；
【导师】 刘中民；
【作者基本信息】 中国科学院研究生院（大连化学物理研究所）， 物理化学， 2004， 博士
【摘要】 组合化学是近20年来发展起来的一种快速合成和筛选大量化合物的新方法，被称为近年来重要的科学进展之一。材料的组合技术发展始于1995年发表在Science上的工作，引起了广泛的关注，随即引发了组合材料研究的热潮。据信，组合材料技术将对材料科学的发展具有性的意义。 论文将多相催化剂的组合制备和高通量筛选作为整体进行考虑，并且建立了相应的方法。所建立的组合制备方法不仅可以替代传统的催化剂浸渍制备方法，而且具有更高的工作效率和可重复性。设计了两种可满足不同使用要求的多通道反应器（恒温反应器和快速升温反应器）。通过色谱分析结果对质谱检测结果的校正，实现对质谱结果的定量分析，首次实现对80个催化剂在与固定床反应条件类似情况下的平行反应和快速筛选，不仅使多通道反应结果之间具有可比性，而且高通量结果与传统反应结果间也具有很强的可比性。利用该高通量筛选系统，可以实现每周对400个催化剂的评价，同时给出这400个催化剂上反应转化率、选择性以及反应收率。首次实现对催化剂的组合程序升温表征，拓宽了组合化学的领域。根据多相催化剂制备的特点和多相催化反应的特点，实现催化剂的组合制备及多通道反应结果的同步监测。... 更多还原
【Abstract】 Combinatorial chemistry, by which a large diversity of chemical compounds are prepared, processed, and tested in a high-throughput fashion, has created a revolution in pharmaceutical and biotechnology development. Now it has been extended to the discovery of new materials since the initial example published in Science in 1995. It is considered that combinatorial technique will revolutionarily improve the development of material science.In this paper, a method for combinatorial preparation and hi... 更多还原
【关键词】 组合化学； 高通量筛选； 表征； 甲烷； 耦合；
【Key words】 combinatorial chemistry； high-throughput screening； characterization； methane； coupling
3. 不同载体负载Mn（Salen）催化剂的微波固相法制备及其在苯乙烯环氧化反应中催化性能的比较
Preparation of Mn(Salen) Complexes Embedding in Different Supports by Solid-state Interaction under Microwave Irradiation and Used as Catalysts for Styrene Oxidation
【作者】 张（龙天）；
【导师】 银董红；
【作者基本信息】 湖南师范大学， 有机化学， 2004， 硕士
【摘要】 烯烃环氧化物在制药、塑料、香料、食物保存剂、生物农药等各个领域具有重要的应用价值。Mn（salen）络合物是非官能化烯烃环氧化反应中一种高效的催化剂，但由于存在催化剂与产品不易分离和催化剂难以重复使用等缺点，近年来，将Mn（salen）络合物固载或包合于无机或有机载体上制备多相催化剂受到广泛关注。然而，目前所报道的固载方法大都要求对载体表面进行有机官能化，普遍存在催化剂的制备过程复杂冗长等缺点。因此，研究一种更为简单的多相催化剂制备方法具有重要的学术意义和应用价值。 本文首次采用微波作用下的Mn（salen）络合物和载体之间的固态相互作用，通过离子交换或分子筛包合的方法，研究了不同载体负载Mn（salen）络合物的催化剂制备方法，用XRD、FT-IR、DR-UV-Vis和TG-DSC等研究手段对不同方法制备的催化剂进行了表征，以苯乙烯环氧化反应作为探针反应，考察了催化剂的不同制备方法和不同载体对苯乙烯环氧化反应的影响规律。 首先考察了不同salen配体和过渡金属离子制备的M（Salen）络合物在苯乙烯的环氧化反应中的催化性能，以乙二胺与水杨醛反应制备的Mn（Ⅲ）Salen催化剂在以H<... 更多还原
【Abstract】 The alkene epoxides find important application in Pharmaceuticals, plastics, perfumes, and pesticide. In this field, the use of Mn(salen) catalysts has received great attention in the last few years, given that they have shown to be useful in the epoxidation of non-functionalized olefins. Despite its interest, this method of epoxidation suffers from some drawbacks from a practical point of view. The high cost of the complex and the lack of recycling methods make it difficult for application of t... 更多还原
【关键词】 Mn(Salen)络合物； 载体； 微波； 苯乙烯； 环氧化；
【Key words】 Mn(salen) complex； support； microwave irradiation； styrene； epoxidation
4. 晶态层状低聚苯乙烯基膦酸—磷酸氢锆轴向配位固载手性Salen Mn（Ⅲ）催化剂的合成及催化烯烃的不对称环氧化反应研究
Synthesis of Salen Mn(Ⅲ)Heterogeneous Catalysts Immobilized onto a Novel Layered Crystalline Zirconium Oligostyrenylphosphonate-phosphate by Axially Coordination and Their Application for Asymmetric Epoxidation of Olefins
【作者】 罗云飞；
【导师】 傅相锴；
【作者基本信息】 西南大学， 应用化学， 2011， 硕士
【摘要】 本论文在本课题组成果的基础上,合成出一类新型的、稳定性好的有机聚合物-无机层状晶态杂化载体材料一层状晶态低聚苯乙烯基膦酸-磷酸氢锆(LCZSPP)。进而在载体的苯环上进行氯甲基化处理,制备了二胺和二酚修饰的晶态有机聚合物-无机杂化载体低聚苯乙烯基膦酸-磷酸氢锆(LCZSPP)轴向固载手性Salen Mn(Ⅲ)催化剂,将其应用于非官能烯烃的多相不对称环氧化反应。研究了两类轴向连接基团及助催化剂在催化不对称环氧化反应中的影响。结果表明,通过二胺为链接基团固载的催化剂在加入轴向助剂(NMO)的情况下,转化率和对映选择性都有较大提高。然而,与文献报道相反,二酚固载的催化剂在不添加轴向助剂的情况下,转化率和对映选择性都比添加轴向助剂有明显提高。两个截然相反的实验结果说明了链接基团对固载手性Salen Mn(Ⅲ)催化剂催化性能和催化机理的重要影响。此外,制备的固载化多相催化剂可以很容易从反应体系中分离出来,并且在重复使用十二次以上后,催化活性和对映选择性都没有明显的降低。 更多还原
【Abstract】 Based on our previous work, a new type of inorganic-organic layered crystalline hybrid material-zirconium oligostyrenylphosphonate-phosphate (LCZSPP) with high thermal stability was designed and synthesized. After chloromethed, the chiral salen Mn (Ⅲ) was axially immobilized onto a novel diamine or diphenoxyl linker modified layered crystalline hybrid material-zirconium oligostyrenylphosphonate-phosphate (LCZSPP) which was synthesized for the first time by our group. The prepared heterogeneous c... 更多还原
【关键词】 层状晶态低聚苯乙烯基膦酸-磷酸氢锆； 手性Salen Mn(Ⅲ)； 多相催化剂； 非官能化烯烃的不对称环氧化反应； 轴向助催化剂的影响；
【Key words】 Layered crystalline zirconium oligostyrenylphosphonate-phosphate； Chiral salen Mn (Ⅲ)； Heterogeneous catalysts； Asymmetric epoxidation of unfunctionalized olefins； The influence of axial additive；
5. 光催化降解糖蜜酒精废水多相催化剂的研究
Study on Multiphase Catalyst for Photocatalytically Degrading Molasses-Alcoholic Wastewater
【作者】 韦江慧；
【导师】 刘自力；
【作者基本信息】 广西大学， 化学工艺， 2003， 硕士
【摘要】 糖蜜酒精废水是一种难降解的废水，是广西糖业综合利用中的瓶颈问题。本文以糖蜜酒精的光催化降解为研究对象研究多相光催化剂考察光催化降解的过程，为光催化降解糖蜜酒精废水提供重要的基础数据，具有重要的理论价值和潜在的应用前景，文章通过多种方法合成了一系列催化剂，并与目前最具有代表性的TiO2光催化剂进行比较。研究发现钨酸铅和钨酸铋对糖蜜酒精废水的降解有很好的活性，并且通过Fe3+对钨酸铋进行改性，发现Fe3+的加入使得光催化剂的活性得到进一步的改善。通过 XRD、FTIR、TG-DTA 和固体漫反射紫外扫描的方法对催化剂进行表征，发现钨酸铋和钨酸铅催化剂的禁带宽度分别为2.75ev和2.82ev低于TiO2的3.2ev的禁带宽度，能较好的利用可见见光的能量。研究发现一定量的氧化物组分存在的钨酸铋和钨酸铅是这类催化剂呈现良好的活性的内在因素 文章对糖蜜酒精废水的光催化降解工艺进行了研究，发现催化剂用量、光照时间、H2O2的存在、空气的流速、物料的酸碱性等都影响糖蜜酒... 更多还原
【Abstract】 Molasses-alcoholic wastewater is difficult to degrade, and it is a "bottleneck" problem of comprehensive utilization of sugarcane in sugar industry of GuangXi Zone. In This paper multiphase photocatalyser and its photocatalytic degrading process for molasses-alcoholic \\vaste\\vatcr by are studied. The fundamental data of photocatalytic degradation for molasses-alcoholic wastewater are given, therefore have important theoretical value and practical perspective.A series of catalyzers were compounde... 更多还原
【关键词】 光催化； 多相催化剂； 废水； 糖蜜酒精；
【Key words】 Photocatalyst； Multiphases catalyst； Wastwater Molasses-alcohol；
6. 催化肉桂醛环化为香豆素的多相催化剂筛选和催化性质的初步研究
Premliminarily Study on Heterogeneous Catalysts and Its Catalytic Properties for Cyclization of Cinnamaldehyde to Coumarin
【作者】 陈晓伟；
【导师】 陈；
【作者基本信息】 广西大学， 应用化学， 2005， 硕士
【摘要】 本研究进行肉桂醛环化为香豆素反应的多相催化剂探索筛选工作。从三个系列40种催化剂中筛选出对反应有较好选择性的AnOm/γ-Al2O2系列催化剂,并对催化剂的催化性质进行了初步的研究。主要研究结果如下: 1.肉桂醛转化率随催化剂中AnOm负载量而改变。当AnOm负载量在16-22wt.%时,肉桂醛转化率大于70%,香豆素选择性大于90%。当AnOm负载量超22wt.%过后,肉桂醛转化率随AnOm负载量的增加而下降,但选择性高于90%。 2.采用CO2-TPD技术测定了催化剂的表面碱点数量。结果表明,当AnOm负载量在0-26wt.%之间,催化剂表面碱点数量（脱附温度175-240℃部分）与AnOm负载量之间有线性关系。 3.催化剂表面积随AnOm负载量的增加而下降,当AnOm负载量大于26wt%,肉桂醛转化率随AnOm负载量增加而下降的趋势与催化剂表面积随AnOm负载量增加而下降的趋势大体相同。 更多还原
【Abstract】 Here, a explorative study on sieving heterogeneous catalysts from 3 difference series of 40 catalysts has been carried out, for cyclization of cinnamaldehyde to coumarin. AnOm/γ-Al2O3 catalysts showed better activity and selectivity for formation of coumarin than others. Catalytic properties on AnOm/γ-Al2O3 catalysts was premliminarily studied. Important conclusion was given as follows:1.Conversion of cinnamaldehyde changes with loading amount of AnOm....
【关键词】 肉桂醛； 香豆素； AnOm/γ-Al2O3； CO2-TPD；
【Key words】 cinnamaldehyde； coumarin； AnOm/γ-Al2O3； CO2-TPD；
五．中国专利文献数据库或中国知识产权网
1.
申 请 号： 200810045055.9 申 请 日： 2008.03.26
名 称： 一种用于酯交换合成碳酸二苯酯多相催化剂的制备方法
公 开 (公告) 号： CN101254460 公开(公告)日： 2008.09.03
主 分 类 号： B01J21/06(2006.01)I 分案原申请号：
分 类 号： B01J21/06(2006.01)I;C07C68/06(2006.01)I;C07C69/96(2006.01)I
颁 证 日： 优 先 权：
申请(专利权)人： 中国科学院成都有机化学有限公司
地 址： 610041四川省成都市人民南路四段九号
发 明 (设计)人： 陈 彤;罗淑文;王公应;雷永诚;曾 毅;姚 洁 国 际 申 请：
国 际 公 布： 进入国家日期：
专利 代理 机构： 代 理 人：
摘要
本发明涉及一种用于碳酸二甲酯与苯酚酯交换合成碳酸二苯酯的多相催化剂的制备方法。催化剂是以SiO2为载体，TiO2为活性组分；加入三乙胺，在有机溶剂中通过浸渍—嫁接后焙烧处理而获得。主要解决多相催化剂酯交换收率低的问题。本发明方法制备的TiO2/SiO2催化剂对碳酸二甲酯与苯酚酯交换合成碳酸二苯酯具有较高的催化活性和酯交换选择性，苯酚转化率可达48.1％，酯交换产物(甲基苯基碳酸酯和碳酸二苯酯)的总选择性大于 99.5％；而且催化剂原料价廉易得，成本低，制备方法简单。
2.
申 请 号： 02115068.0 申 请 日： 2002.04.12
名 称： 双金属氰化物催化剂及其制法和应用方法
公 开 (公告) 号： CN1387946 公开(公告)日： 2003.01.01
主 分 类 号： B01J27/26 分案原申请号：
分 类 号： B01J27/26;B01J31/02C08G65/26;C08G65/30
颁 证 日： 优 先 权：
申请(专利权)人： 中国科学院广州化学研究所
地 址： 510650广东省广州市天河区五山乐意居
发 明 (设计)人： 陈立班;颜再荣;张敏;杨淑英;余爱芳;吴立传;刘保华 国 际 申 请：
国 际 公 布： 进入国家日期：
专利 代理 机构： 广州科粤专利代理有限责任公司 代 理 人： 余炳和
摘要
本发明涉及一种用于环氧化物开环聚合的高活性双金属氰化物催化剂及其制法和应用方法。该催化剂包含有：(a)含有二价金属和过渡金属的双金属氰化物；(b)2～80wt％的有机硅类大分子螯合剂；(c)0～15wt％的减水剂。其制法包括：(1)配制二价金属卤化物和有机硅类大分子螯合剂的混合溶液；(2)向上述混合溶液中加入过渡金属络氰化物的水溶液；(3)分离沉淀物并洗涤；(4)干燥。该催化剂用于环氧化物开环聚合制备聚醚中，可采用在催化剂存在下，通过连续加入环氧化物和分子量调节剂的混合物的方法。该催化剂活性高，制法简单，原料消耗少，制备聚醚平稳而且容易控制，产品性能优异。
3.
申 请 号： 01119414.6 申 请 日： 2001.05.24
名 称： 低碳烯烃合成C12－C18的ZrZSM－5分子筛催化剂及制备方法
公 开 (公告) 号： CN1387947 公开(公告)日： 2003.01.01
主 分 类 号： B01J29/40 分案原申请号：
分 类 号： B01J29/40;C07C2/12
颁 证 日： 优 先 权：
申请(专利权)人： 中国科学院山西煤炭化学研究所
地 址： 030001山西省太原市165信箱
发 明 (设计)人： 胡津仙;纪华;相宏伟;李永旺;王俊杰 国 际 申 请：
国 际 公 布： 进入国家日期：
专利 代理 机构： 山西五维专利事务所(有限公司) 代 理 人： 李毅;魏树巍
摘要
本发明公开了一种低碳烯烃合成C12－C18的ZrZSM－5分子筛催化剂及制备方法，催化剂的重量百分比组成为：Zr：2.0～7.0％，ZSM－5分子筛93.0～98.0％，所述的ZSM分子筛是Si/Al摩尔比为24～78的氢型ZSM－5分子筛，采用在酸性溶液中进行离子交换而将Zr离子引入沸石中对其物性进行调整，使分子筛的强酸活性中心向中强酸的弱酸中心调变。在相同的反应条件下改质后齐聚反应的活性和C12～C18的选择性均有增加，C12～C18的选择性由40％增加至78％左右，使低碳烯烃合成柴油成为可能。
4.
申 请 号： 01118443.4 申 请 日： 2001.05.30
名 称： 一种固体形式的酸催化剂及其制备方法
公 开 (公告) 号： CN1387950 公开(公告)日： 2003.01.01
主 分 类 号： B01J35/02 分案原申请号：
分 类 号： B01J35/02
颁 证 日： 优 先 权：
申请(专利权)人： 中国石油化工股份有限公司;中国石油化工股份有限公司石油化工科学研究院;学研究院
地 址： 100029北京市朝阳区惠新东街甲6号
发 明 (设计)人： 谢文华;付强;舒兴田;闵恩泽 国 际 申 请：
国 际 公 布： 进入国家日期：
专利 代理 机构： 中国专利代理()有限公司 代 理 人： 徐舒;庞立志
摘要
一种固体形式的酸催化剂及其制备方法，其特征在于该催化剂含有1～80重量％的液体酸和99～20重量％的用于包裹该液体酸的固体物质；其中所说液体酸为具有一个C1－C10烷基的硫酸氢酯或磷酸氢酯，并选择性地含有硫酸或磷酸，硫酸或磷酸与硫酸氢酯或磷酸氢酯的比例为酸∶酯＝(0～95)∶(100～5)。本发明提供的固体酸催化剂其酸中心数目多且分布均匀，活性中心保持液体酸的特点，既具有固体的形状，又具有液体酸的反应性能，适用于非极性反应介质的低温反应。
5.
申 请 号： 01118447.7 申 请 日： 2001.05.30
名 称： 一种铂－铼重整催化剂及制备方法
公 开 (公告) 号： CN1388218 公开(公告)日： 2003.01.01
主 分 类 号： C10G35/085 分案原申请号：
分 类 号： C10G35/085
颁 证 日： 优 先 权：
申请(专利权)人： 中国石油化工股份有限公司;中国石油化工股份有限公司石油化工科学研究院;学研究院
地 址： 100029北京市朝阳区惠新东街甲6号
发 明 (设计)人： 张大庆;孙作霖;臧高山;陈志祥;谷婉华 国 际 申 请：
国 际 公 布： 进入国家日期：
专利 代理 机构： 中国专利代理()有限公司 代 理 人： 徐舒;庞立志
摘要
一种铂铼重整催化剂，由0.1～2.0重％的铂、0.1～2.0重％的铼、0.1～0.98重％的钇、0.1～2.0重％的氯及余量氧化铝载体组成。该催化剂采用分步浸渍法制备，具有良好的催化活性和选择性。适用于馏程为60～210℃的直馏石脑油或汽油馏份的重整过程。
6.
申 请 号： 02130059.3 申 请 日： 2002.08.19
名 称： 一种用于烟气脱氮的堇青石蜂窝陶瓷催化剂及其制备方法和应用
公 开 (公告) 号： CN1401416 公开(公告)日： 2003.03.12
主 分 类 号： B01D53/86 分案原申请号：
分 类 号： B01D53/86;B01D53/56;B01J23/72;B01J32/00
颁 证 日： 优 先 权：
申请(专利权)人： 中国科学院山西煤炭化学研究所
地 址： 030001山西省太原市165信箱
发 明 (设计)人： 刘振宇;刘清雅;牛宏贤 国 际 申 请：
国 际 公 布： 进入国家日期：
专利 代理 机构： 山西五维专利事务所(有限公司) 代 理 人： 李毅
摘要
一种用于烟气脱氮的堇青石蜂窝陶瓷催化剂是使用堇青石蜂窝陶瓷为第一载体，活性氧化铝膜为第二载体，CuO为活性组分，其中活性氧化铝含量为3-5.3％，CuO担载量为1.25-15wt.％。采用制备方法是将堇青石蜂窝陶瓷涂活性氧化铝膜、再负载CuO制备的脱氮催化剂。本发明具有成本低，强度高，高的脱氮活性，并且有很好的抗水性能和抗SO2毒化性能的优点。
7.
申 请 号： 01802509.9 申 请 日： 2001.08.21
名 称： 制备聚酯的催化剂、聚酯的制备方法和聚酯
公 开 (公告) 号： CN1388810 公开(公告)日： 2003.01.01
主 分 类 号： C08G63/85 分案原申请号：
分 类 号： C08G63/85
颁 证 日： 优 先 权： 2000.8.22 JP 251243/00;2000.8.22 JP 251244/00;2001.6.29 JP 1985/01
申请(专利权)人： 三井化学株式会社
地 址： 日本东京
发 明 (设计)人： 堀秀史;江原不二人;清水昭义;向展正;平冈章二 国 际 申 请： PCT/JP01/07153 2001.8.21
国 际 公 布： WO02/167 日 2002.2.28 进入国家日期： 2002.04.22
专利 代理 机构： 上海专利商标事务所 代 理 人： 沙永生
摘要
通过本发明，提供了制备聚酯的催化剂，它包含含有钛、氧、碳和氢并具有Ti－O键的固体钛化合物，当将此催化剂溶解于150℃加热下的乙二醇中时，测得它在乙二醇中有以钛原子计不小于3,000ppm的最大溶解度，还提供了制备聚酯的催化剂，它包含含钛溶液，其中卤化钛的水解产物或烷氧基钛的水解产物与多元醇的接触产物以按钛原子计为3,000－100,000ppm的量溶解于乙二醇中，还提供了用此催化剂制备聚酯的方法，以及由此方法制成的聚酯。根据本发明，能以比用常规催化剂制成的聚酯更高的催化活性制成聚酯，并且可获得与用锑化合物作为缩聚催化剂的方法所获得的聚酯相比透明度更好、色调更佳和乙醛含量更低的聚酯。
六．国家科技图书文献中心的中文数据库。
1. 松香酯化的多相催化剂的制备
【作者单位】：不详;不详
【刊名】：化学世界
【ISSN】：0367-6358
【出版年】：1992
【卷】：033
【期】：008
【起页】：373
【止页】：377
【总页数】：5
【馆藏号】：0120100121975214
【分类号】：TQ351.472
【关键词】：松香;酯化;多相催化剂;制备;
【语种】：汉语
【馆藏单位】：中国科学技术信息研究所
2. 载体、金属-载体相互作用与多相催化剂的制备
【作者单位】：中国石油化工股份有限公司抚顺石油化工研究院,辽宁抚顺,113001;中国石油化工股份有限公司抚顺石油化工研究院,辽宁抚顺,113001
【刊名】：石油学报(石油加工)
【ISSN】：1001-8719
【出版年】：2003
【卷】：019
【期】：003
【起页】：1
【止页】：13
【总页数】：13
【馆藏号】：0120100209943900
【分类号】：TE624.4;O3.3
【关键词】：金属-载体相互作用;PASCA;加氢处理;催化重整;
【语种】：汉语
【文摘】：对多相(非均相)催化剂主要是Mo(W)Ni(Co)/Al2O3加氢处理催化剂和PtRe/Al2q催化重整催化剂的制备研究作一概述.讨论的重点集中在原子水平上研究载体的性质、金属-载体之间的相互作用,及其对载体和相应催化剂的表面性质或表面结构(形貌)的影响.除了采用TPR、DRS、ESCA、IR和微型反应色谱等技术之外,还采用了一种新的表面测试技术PASCA(Positron annihilation spectroscopy br chemical analysis)来表征这两类催化剂.基于这些研究结果,提出了开发新型加氢处理和催化重整催化剂的总体思路.
3. 壳聚糖希夫碱铜多相催化剂的制备及其催化苯乙烯环丙烷反应的研究
【作者单位】：中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州,730000;中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州,730000;中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州,730000;中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州,730000;中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州,730000
【刊名】：分子催化
【ISSN】：1001-3555
【出版年】：2003
【卷】：017
【期】：001
【起页】：1
【止页】：5
【总页数】：5
【馆藏号】：0120100227080816
【分类号】：O3.32
【关键词】：壳聚糖;希夫碱;铜;不对称环丙烷化;苯乙烯;
【语种】：汉语
【文摘】：采用均相和多相两种方法合成了壳聚糖希夫碱-Cu(Ⅱ)配合物,用于催化苯乙烯的不对称环丙烷反应,考察了不同制备方法和不同铜含量对催化剂催化性能的影响以及催化剂的重复使用情况.当催化剂的铜含量为4.4%时,得到20.7%的ee值.
4. 壳聚糖负载钯手性多相催化剂的制备与表征
【作者单位】华东理工大学,工业催化研究所,上海,200237;华东理工大学,工业催化研究所,上海,200237;华东理工大学,工业催化研究所,上海,200237;华东理工大学,工业催化研究所,上海,200237;华东理工大学,工业催化研究所,上海,200237;华东理工大学,工业催化研究所,上海,200237
【刊名】：石油化工
【ISSN】：1000-8144
【出版年】：2004
【卷】：033
【期】：0z1
【起页】：1104
【止页】：1106
【总页数】：3
【馆藏号】：0120100207973855
【分类号】：O3
【关键词】：壳聚糖;苯乙酮;手性催化剂;多相;氢化;氢转移;苯乙醇;
【语种】：汉语
【文摘】：用壳聚糖修饰改性了无定型二氧化硅,制得双重载体,通过配位络合将Pd离子负载到载体上,制得多相手性催化加氢催化剂.催化剂进行了SEM、FTIR及元素分析,在空气氛围下,以苯乙酮氢转移不对称催化加氢反应,对催化剂的不对称催化加氢性能进行了研究.实验结果表明,壳聚糖基本全部负载于载体上,Pd与壳聚糖上的氨基反应络合负载于载体上.在苯乙酮不对称氢化反应中,助催化剂氢氧化钠可明显提高反应速率和转化率,高温有利于提高转化率,低温有利于对映体过量值的提高.在30℃反应24 h,1-苯乙醇的对映体过量值可高达13.7%.
【馆藏单位】：中国科学技术信息研究所
5. 酯交换合成碳酸二甲酯催化剂研究进展
【作者单位】：中国科学院成都有机化学研究所,四川,成都,610041;中国科学院研究生院,北京,100049;中国科学院成都有机化学研究所,四川,成都,610041;中国科学院成都有机化学研究所,四川,成都,610041;中国科学院成都有机化学研究所,四川,成都,610041
【刊名】：工业催化
【ISSN】：1008-1143
【出版年】：2006
【卷】：014
【期】：011
【起页】：6
【止页】：11
【总页数】：6
【馆藏号】：0120100346533990
【分类号】：O623.622
【关键词】：碳酸二甲酯;酯交换;碳酸乙烯酯;碳酸丙烯酯;
【语种】：汉语
【文摘】：综述了近年来国内外碳酸乙烯酯或碳酸丙烯酯与甲醇酯交换合成碳酸二甲酯催化剂的研究进展,重点对金属氧化物催化剂、离子交换树脂和负载型催化剂等多相催化剂的制备和催化性能作了介绍.金属氧化物催化剂在使用过程中可能发生化学变化,催化寿命较短;离子交换树脂对热稳定性较差,不能在高温下长期使用;负载型催化剂活性组分的流失有待解决.尽管存在这些不足,但多相催化剂分离简单,容易实现反应-分离一体化,是今后研究开发的主要方向.
【馆藏单位】：中国科学技术信息研究所
6. 多相硅氢加成催化剂的制备及应用
【作者单位】：浙江工业大学工业催化研究所绿色化学合成技术国家重点实验室培育基地,杭州310032;杭州师范大学有机硅化学及材料技术教育部重点实验室,杭州310012;杭州师范大学有机硅化学及材料技术教育部重点实验室,杭州310012;杭州师范大学有机硅化学及材料技术教育部重点实验室,杭州310012;浙江工业大学工业催化研究所绿色化学合成技术国家重点实验室培育基地,杭州310032
【刊名】：化学进展
【出版年】：2011
【卷】：023
【期】：012
【起页】：2466
【止页】：2477
【总页数】：12
【馆藏号】：01201206022362
【分类号】：O3.3;O627.41
【关键词】：硅氢加成;多相催化剂;加成;
【语种】：汉语
【文摘】：硅氢加成反应是有机硅化学领域最为重要的反应之一。 自该反应于1947年被发现以来,大量的文献对其进行了报道。 本文综述了近十年来应用于硅氢加成反应的各类负载型催化剂的研究进展,介绍了活性炭、二氧化硅、分子筛等负载过渡金属催化剂,重点介绍了有机-无机杂化载体负载Pt、Rh、Au等多相催化剂的制备方法及其在硅氢加成反应中的应用,并分析了其催化作用机理;总结了功能高分子化合物负载过渡金属在硅氢加成反应中的研究,和新型含不同官能基团的离子液体络合金属催化剂的制备方法及其对不饱和烃与含氢硅烷的硅氢加成反应的催化性能,总结和讨论了催化反应机理的研究,并对多相硅氢加成催化剂的发展方向进行了分析和展望。
七．国家科技图书文献中心的西文数据库
1. Transfer hydrogenation of olefin from alcohol using a hydrogen-absorbing alloy (CaNi_5) catalyst
Journal of Alloys and Compounds
【ISSN】：0925-8388
【出版年】：1999
【卷】：293/295
【期】：0
【起页】：919
【止页】：922
【总页数】：4
【分类号】：TG13; TG14
【关键词】：Catalytic transfer hydrogenation;Dehydrogenation;CaNi_5;Hydrogen-absorbing alloy;Catalyst;氢吸收合金;催化剂;酒精;氢化作用;
【语种】：英语
【文摘】：Gas-phase reactions between 2-butene and 2-propanol on a hydrogen-absorbing alloy CaNi_5 have been studiedin the temperature range of 393 to 473 K. CaNi_5 showedinteresting characteristics as an active catalyst for the transferhydrogenation of butene from propanol as a hydrogen donor. 2-Propanol was effectively dehydrogenated to yield acetone, inwhich the dissociated hydroen was completely absorbed byCaNi_5 to form the metal hydride. When the alloy was hydrided tosome extent, butene was effectively hydrogenated by the absorbedhydrogen in the metal hydride to produce butane. The overallreaction was expressed as catalytic transfer hydrogenation throughthe formation of metal hydride intermediates (CaNi_5H_n).Transfer hydrogenation2-butene + 2-propanol -------------------->butane + acetoneCaNi_5H_nCatalytic transfer hydrogenation on CaNi_5 occurred at 423 K viahydriding of CaNi_5 by 2-propanol dehydrogenation withsubsequent dehydriding for the hydrogenation of 2-butene, ratherthan the direct reaction between 5-butene and 2-propanol on thealloy. 1999 Elsevier Seience S.A. All rights reserved.
【馆藏单位】：中国科学院文献情报中心
2. Catalysed reactive milling P.Tessier;E.Akiba;Journal of Alloys and Compounds
【ISSN】：0925-8388
【出版年】：1999
【卷】：293/295
【期】：0
【起页】：400
【止页】：402
【总页数】：3
【分类号】：TG13; TG14
【关键词】：Catalysis;Ball-milling;Hydrogen;Magnesium;Nickel;催化剂;球磨;氢;镁;镍;
【语种】：英语
【文摘】：Magnesium is mechanically activated in a high-energy planetary ball mill. It is found that the yield of magnesiumhydride is considerably increased by the addition of a small amountof nickel. 1999 Elsevier science S.A. All rights reserved.
3. Nanostructural Features of Pd/C Catalysts Investigated by X-ray Rietveld Analysis G. Fagherazzi;P. Canton;
【刊名】：表面
【ISSN】：0367-8X
【出版年】：1999
【卷】：37
【期】：12
【起页】：50
【止页】：55
【总页数】：6
【分类号】：O7
【关键词】：catalysts Pd/C;nanostructural features;X-ray analysis;催化剂;纳米结构;X射线分析;
【语种】：英语
【文摘】：This study used XRPD techniques to investigate thenanocrystalline features of a series of four Pd/C catalysts, whichhad the same load of 0.53 wt.% of palladium, with differentdispersions, obtained by applying different temperature ageings upto 873K . By means of a rietveld refinement, performed using aspecial fitting procedure which takes into account the variouscontributions to the background scattering, the palladium fractionresponsible for the "visible" XRPD peaks can be distinguishedfrom the palladium fraction which gives rise to diffuse scattering(due to nanocrystallites or nanoclusters smaller than about 2?m).The amount of carbon was also determined. A systematic increasein the "visible" Pd fraction (strictly connected with an increase incrystallite size) was observed to be a function of the thermaltreatment temperature. A comparison of this Rietveld absolutequantitative analysis was made using a single peak standardrelative analysis, which needs a suitable reference sample.
【馆藏单位】：冶金工业信息标准研究院
4.J.&J. Dyson acquires Saffil from ICI
【刊名】：World Ceramics & Refractories
【ISSN】：0959-6127
【出版年】：1999
【卷】：10
【期】：5
【起页】：5
【止页】：0
【总页数】：1
【分类号】TQ17
【关键词】：catalyst;temperature;alumina;fibres;quality;催化剂;温度;氧化铝;纤维;质量;
【语种】：英语
【馆藏单位】：冶金工业信息标准研究院
5. Structure of a bacterial ribonuclease P holoenzyme in complex with tRNA
Nicholas J. Reiter;Amy Osterman;Alfredo Torres-Larios;Kerren K. Swinger;Tao Pan;Alfonso Mondragon;
【作者单位】：Department of Molecular Biosciences, Northwestern University, Evanston, Illinois 60208, USA;Department of Molecular Biosciences, Northwestern University, Evanston, Illinois 60208, USA;Department of Molecular Biosciences, Northwestern University, Evanston, Illinois 60208, USA Departamento de Bioquimica y Biologia Estructural, Institute de Fisiologia Celular, Universidad Nacional Autonoma de Mexico, Ciudad Universitaria, Apartado Postal;Department of Molecular Biosciences, Northwestern University, Evanston, Illinois 60208, USA;Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois 60637, USA;Department of Molecular Biosciences, Northwestern University, Evanston, Illinois 60208, USA
【刊名】：Nature
【ISSN】：0028-0836
【出版年】：2010
【卷】：468
【期】：Dec.9 TN.7325
【起页】：784
【止页】：7,iii
【总页数】：7
【分类号】：N
【语种】：英语
【文摘】：Ribonuclease (RNase) P is the universal ribozyme responsible for 5'-end tRNA processing. We report the crystal structure of the Thermotoga maritima RNase P holoenzyme in complex with tRNA~(Phe). The 154 kDa complex consists of a large catalytic RNA (P RNA). a small protein cofactor and a mature tRNA. The structure shows that RNA-RNA recognition occurs through shape complementarity. specific intermolecular contacts and base-pairing interactions. Soaks with a pre-tRNA 5' leader sequence with and without met al help to identify the 5' substrate path and potential catalytic met al ions. The protein binds on top of a universally conserved structural module in P RNA and interacts with the leader. but not with the mature tRNA. The active site is composed of phosphate backbone moieties. a universally conserved uridine nucleobase. and at least two catalytically important met al ions. The active site structure and conserved RNase P-tRNA contacts suggest a universal mechanism of catalysis by RNase P.
【其他语种文摘】：转移RNA(tRNA)是作为前体合成的，这些前体要求在5’和3’端进修剪并对特定核苷酸进行些修饰。 Ribozyme Rnase P普遍对处理tRNA的5’端负责。 现在，与成熟苯基丙氨酸转移RNA结合在一起的fqNase P(来自Thermoto- ga maritima)的晶体结构已被确定。 该结构显示了在pre-tRNA识别中所涉及的相互作用、活性点位置及催化中金属的作用。 Rnase P/tRNA 核糖核蛋白结构也为一个基于RNA的古老世界是怎样演化为当今由蛋白一催化剂支配的世界的提供了线索。
【馆藏单位】：中国科学技术信息研究所
6.Catalytic functionalization of unactivated primary C-H bonds directed by an alcohol
Eric M. Simmons;John F. Hartwig;
【作者单位】：Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA. tPresent address: Department of Chemistry, University of California, Berkeley, California 91820, USA;Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA. tPresent address: Department of Chemistry, University of California, Berkeley, California 91820, USA
【刊名】：Nature
【ISSN】：0028-0836
【出版年】：2012
【卷】：483
【期】：Mar.1 TN.7387
【起页】：70
【止页】：b1
【总页数】：5
【分类号】：N
【语种】：英语
【文摘】：New synthetic methods for the catalytic functionalization of C-H bonds have the potential to revolutionize the synthesis of complex molecules1"4. However, the realization of this synthetic potential requires the ability to functionalize selectively one C-H bond in a compound containing many such bonds and an array of functional groups. The site-selective functionalization of aliphatic C-H bonds is one of the greatest challenges that must be met for C-H bond functionalization to be used widely in complex-molecule synthesis, and processes catalysed by transition-metals provide the opportunity to control selectivity. Current methods for catalytic, aliphatic C-H bond functionalization typically rely on the presence of one inherently reactive C-H bond or on installation and subsequent removal of directing groups that are not components of the desired molecule. To overcome these limitations, we sought catalysts and reagents that would facilitate aliphatic C-H bond functionalization at a single site, with chemoselectivity derived from the properties of the catalyst and site-selectivity directed by common functional groups contained in both the reactant and the desired product. Here we show that the combination of an iridium-phenanthroline catalyst and a dihydridosilane reagent leads to the site-selective y-functionalization of primary C-H bonds controlled by a hydroxyl group, the most common functional group in natural products. The scope of the reaction encompasses alcohols and ketones bearing many substitution patterns and auxiliary functional groups; this broad scope suggests that this methodology will be suitable for the site-selective and diastereoselective functionalization of complex natural products.
【其他语种文摘】：用于C-H键选择性功能化的新合成方法的开发 极为重要，因为这种化学反应有可能使复杂分 子的合成发生性变化。 在这篇文章中，Eric Simmo rls和John Hartwig发现，一种“铱-邻 二氦杂菲”催化剂和一种“dihvdrdosi Jane”试 剂的组合，导致靠近一个羟基官能团的主C-H 键的地点选择性功能化。 该反应的范围包括醇 和酮，说明这种方法将适合于复杂天然产物中 C．H键的选择性功能化。
【馆藏单位】：中国科学技术信息研究所
7. High-valent organometallic copper and palladium in catalysis
【作者单位】：University of Michigan, Department of Chemistry, 930 North University Avenue, Ann Arbor, Michigan 48109, USA.;University of Michigan, Department of Chemistry, 930 North University Avenue, Ann Arbor, Michigan 48109, USA.
【刊名】：Nature
【ISSN】：0028-0836
【出版年】：2012
【卷】：484
【期】：Apr.12 TN.7393
【起页】：177
【止页】：A3
【总页数】：10
【分类号】：N
【语种】：英语
【文摘】：Copper and palladium catalysts are critically important in numerous commercial chemical processes. Improvements in the activity, selectivity and scope of these catalysts could drastically reduce the environmental impact, and increase the sustainability, of chemical reactions. One rapidly developing strategy for achieving these goals is to use 'high-valent' organometallic copper and palladium intermediates in catalysis. Here we describe recent advances involving both the fundamental chemistry and the applications of these high-valent metal complexes in numerous synthetically useful catalytic transformations.
【其他语种文摘】：均相铜和铂催化剂被用来合成包括药物、商业化学品及聚合物在内的一系列有机分子。 在这些催化剂的活性、选择性和范围方面所实现的改进，有可能提高他们的用途，减少化学反应的环境影响。 在这篇Review文章中，Amanda Hickman和Melanie Sanford总结了对一个子类的催化剂进行研究的有机金属化学家所取得的最新进展。 这个子类的催化剂通过在+3或+4氧化态含有铂或在+3氧化态含有铜的一个中间体来发挥催化作用。
【馆藏单位】：中国科学技术信息研究所
8.Engineering the third wave of biocatalvsis
U. T. Bornscheuer;R. J. Kazlauskas;S. Lutz;J. C. Moore;G. W. Huisman;K. Robins;
【作者单位】：
Institute of Biochemistry, Department of Biotechnology & Enzyme Catalysis, Greifswald University, Felix-Hausdorff-StraBe 4, D-l 7487 Greifswald, Germany;Department of Biochemistry, Molecular Biology and Biophysics, Biotechnology Institute, University of Minnesota, 1479 Gortner Avenue, Saint Paul, Minnesota 55108, USA,Department of Chemical and Biological Engineering, Seoul National University, Seoul 151-7;Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, USA;Merck Research Laboratories, Merck & Co., Rahway, New Jersey 07065, USA;Codexis Inc., 200 Penobscot Drive, Redwood City, California 94063, USA;Lonza AG, Valais Works, CH-3930 Visp, Switzerland
【刊名】：Nature
【ISSN】：0028-0836
【出版年】：2012
【卷】：485
【期】：May 10 TN.7397
【起页】：185
【止页】：a1
【总页数】：11
【分类号】：N
【语种】英语
【文摘】：Over the past ten years, scientific and technological advances have established biocatalysis as a practical and environmentally friendly alternative to traditional metallo- and organocatalysis in chemical synthesis, both in the laboratory and on an industrial scale. Key advances in DNA sequencing and gene synthesis are at the base of tremendous progress in tailoring biocatalysts by protein engineering and design, and the ability to reorganize enzymes into new biosynthetic pathways. To highlight these achievements, here we discuss applications of protein-engineered biocatalysts ranging from commodity chemicals to advanced pharmaceutical intermediates that use enzyme catalysis as a key step.
【其他语种文摘】：2001年，Nature杂志上的一篇Review Article (go.nature.com/t38uzr)盘点了生物催化(用酶或微生物来进行合成化学反应)领域当时的最新进展，并预测了该技术的稳定发展。 在此后的十年问，生物催化已成为在化学反应中使用基于过渡金属的催化剂的方法的一种实用的、环保的替代方法。 在一篇新的Review文 章中，Bornscheuer等人对该领域进行了重新审视。 他们说，我们正在见证生物催化领域的第三轮发展，在这一轮发展中，我们可以通过工程方法使酶具有全新的活性。 本文作者们特别指出了生物催化剂在几种应用中所取得的成功，其中包括重要商业化学品及高级药物中间体的合成。
【馆藏单位】：中国科学技术信息研究所
八．美国《工程索引》
1. Scientific bases for the preparation of heterogeneous catalysts
Feaviour, Mark R.1 ; Schofield, Emma R.1
Source: Platinum Metals Review, v 51, n 1, p 42-44, January 2007; E-ISSN: 14710676; DOI: 10.1595/147106707X169786; Publisher: Johnson Matthey Public Limited Company
Author affiliation:
1 Johnson Matthey Technology Centre, Blounts Court, Sonning Common, Reading RG4 9NH, United Kingdom
Abstract:
The 9th International Symposium on the Scientific Bases for the Preparation of Heterogeneous Catalysts took place at the Universite´ Catholique de Louvainin Louvain-la-Neuve, Belgium, on September 10-14, 2006. The symposium attended by the delegates from the industry and Europe covered the topics such as key aspects in catalyst preparation, saturated catalysts, supported metal catalysts, micro- and mesoporous supports, tailored Zeolites, catalysis by bases, and catalysts for fuel production. These categories of topics included precious metal catalysts such as platinum, palladium, ruthenium, and gold. The symposium also featured novel catalyst preparation techniques and the magnetron sputtering for preparation of precious metal catalysts. The symposium featured the role of pgms for Heterogeneous Catalysts, understanding of the base metals, precious metal species used in catalyst precursors, and the active metallic species involved in catalysis.(2 refs)
Main heading: Technical presentations
Controlled terms: Catalysis - Fuels - Magnetron sputtering - Platinum - Ruthenium - Zeolites
Uncontrolled terms: Catalyst preparation - Precious metal catalysts - Saturated catalysts
Classification Code: 522 Gas Fuels - 547.1 Precious Metals - 802.2 Chemical Reactions - 804.2 Inorganic Compounds - 901.2 Education - 932.1 High Energy Physics
Treatment: General review (GEN)
Database: Compendex
2. Fundamentals in the preparation of heterogeneous catalysts
Campanati, M.1; Fornasari, G.1; Vaccari, A.1
Source: Catalysis Today, v 77, n 4, p 299-314, January 15, 2003; ISSN: 09205861; DOI: 10.1016/S0920-5861(02)00375-9; Publisher: Elsevier
Author affiliation:
1 Dipto. di Chim. Indust. e dei Mat., INSTM - UdR di Bologna, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
Abstract:
The preparation of heterogeneous catalysts has by now lost all empirical aspects. The approach is scientific and involves a wide number of specific competencies of solid state chemistry, analytical chemistry, physical chemistry, kinetics, rheology, etc. The fundamental aspects in the preparation of heterogeneous catalysts starting from catalyst design up to the catalyst in its final form are briefly reviewed, with focus on the key factors in each preparation step and the main differences between laboratory and industrial scale preparations. The main properties of monolithic catalysts and their preparation methods are also reported, considering their relevance for environmental applications. © 2002 Elsevier Science B.V. All rights reserved.(93 refs)
Main heading: Catalysts
Controlled terms: Catalysis - Gases - Hydrothermal synthesis - Phase equilibria
Uncontrolled terms: Heterogeneous catalysts
Classification Code: 801.4 Physical Chemistry - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 931.2 Physical Properties of Gases, Liquids and Solids
Treatment: Literature review (LIT) - Theoretical (THR) - Experimental (EXP)
Database: Compendex
3. Use of Some Organometallic Compounds of Ni, Mo, Cr, and W for Preparation of Heterogeneous Catalysts.
Jiratova, Kveta1; Rocek, Josef1
Source: Chemicky prumysl, v 37, p 62/5, May 1987; Language: Czech; ISSN: 000927
Author affiliation:
1 CSAV, Prague, Czech, CSAV, Prague, Czech
Abstract:
Some less common methods for the preparation of heterogeneous catalysts are presented, which make use of organometallic compounds of nickel, molybdenum, chromium, and tungstene. The catalytic properties of the prepared catalysts have been evaluated; the advantages and drawbacks of the individual methods are discussed.(47 refs)
Main heading: ORGANOMETALLICS
Controlled terms: CATALYSTS - Organometallics
Uncontrolled terms: HETEROGENEOUS CATALYSTS
Classification Code: 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally
Treatment: Experimental (EXP)
Database: Compendex
4. 10th scientific bases for the preparation of heterogeneous catalysts
Houghton, Jennifer1
Source: Platinum Metals Review, v 55, n 1, p 28-32, January 2011; ISSN: 00321400, E-ISSN: 14710676; DOI: 10.1595/147106711X5403; Publisher: Johnson Matthey Public Limited Company
Author affiliation:
1 Johnson Matthey Technology Centre, Blounts Court, Sonning Common, Reading RG4 9NH, United Kingdom
Abstract:
The 10th International Symposium on the Scientific Bases for the Preparation of Heterogeneous Catalysts ('PREPA10') was held in Louvain-la-Neuve, Belgium from July 11-15, 2010. It was attended by more than 270 delegates from 34 countries, of whom more than 20% were from industry. A scientific committee consisting mainly of industrial representatives refereed all published submissions and selected the presentations, which gave the symposium a strong industrial focus. The symposium included a number of topics, such as scaling up, shaping and macrostructured catalysts, basic understanding and innovations in unit operations, and nanostructured catalysts. The plenary speaker was Galen Stucky (University of California,Santa Barbara (UCSB), US, who presented a range of topics, including the use of zeolites to prevent fatal blood loss. The highlights of the first session included several presentations on the coating of metallic substrates with catalytic materials.(15 refs)
Main heading: Catalysts
Controlled terms: Industry - Silicate minerals - Substrates
Uncontrolled terms: Belgium - Blood loss - Catalytic materials - Heterogeneous catalyst - Metallic substrate - Nano-structured catalyst - Santa Barbara - Scaling-up - Unit operation - University of California
Classification Code: 912 Industrial Engineering and Management - 911 Cost and Value Engineering; Industrial Economics - 804 Chemical Products Generally - 913 Production Planning and Control; Manufacturing - 803 Chemical Agents and Basic Industrial Chemicals - 482.2 Minerals - 461 Bioengineering and Biology - 801 Chemistry
Database: Compendex
5. Preparation of heterogeneous catalysts : SSSSynthesis of highly dispersed solids and their reactivity
Delmon, B.1
Source: Journal of Thermal Analysis and Calorimetry, v 90, n 1, p 49-65, October 2007; ISSN: 13886150; DOI: 10.1007/s10973-007-8476-y; Publisher: Kluwer Academic Publishers
Author affiliation:
1 CATA, Université Catholique de Louvain, Place Croix du Sud 2/17, Louvain-la-Neuve 1348, Belgium
Abstract:
The preparation of heterogeneous catalysts has been for many years a dynamic field of sub-nanotechnology and remains so nowadays. The approach to preparation must be examined in function of the specific demands concerning (i) activity and (ii) selectivity, that both depend on the arrangement of atoms at a scale smaller than 0.02 nm. Adequate access of reactants to the surface must be provided. Most catalysts are used in the form of pellets or cylinders obtained by pressing, extrusion or other techniques. This implies a control of texture at dimension scales extending from a fraction of a nanometer to several millimetres (and sometimes more). A third demand (iii) is resistance to ageing. In particular, stability at relatively high temperatures is necessary. The strategy adopted in the majority of cases is to start from a material that is homogeneous in composition at the Angstro¨m scale, generally a liquid or a solid of complex composition, frequently amorphous. A general objective is to locate the different constituting atoms at precise positions. The main difficulty is to transform the starting precursor into a highly porous solid without segregation of different elements that would produce tiny parts with different properties. The specific approach to catalyst preparation is based on the general concepts used for controlling the reactivity of solids. Typical methods of general use will be examined. Chemical bonds of practically any kind can retain the elements constituting the future catalyst at the position they have in the precursor. The so-called 'citrate process' and its variants are of wide application. More elaborate approaches start from molecules or polymers associating the necessary elements. © 2007 Springer Science+Business Media, LLC.(114 refs)
Main heading: Catalysts
Controlled terms: Chemical bonds - Diffusion - Nanotechnology - Nucleation - Synthesis (chemical)
Uncontrolled terms: Catalyst preparation - Mixed oxide catalysts - Multi-component precursors - Reactivity of solids - Segregation in solids
Classification Code: 933.1.2 Crystal Growth - 931.1 Mechanics - 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.2 Chemical Reactions - 801.4 Physical Chemistry - 761 Nanotechnology
Treatment: Theoretical (THR) - Experimental (EXP)
Database: Compendex
6. Aspects of the preparation of heterogeneous catalysts by impregnation
Alexiou, M.S.1; Sermon, P.A.1
Source: Reaction Kinetics and Catalysis Letters, v 51, n 1, p 1-7, Nov 1993; ISSN: 01331736; Publisher: Publ by Elsevier Science Publishers B.V.
Author affiliation:
1 Brunel Univ, Middlesex, United Kingdom
Abstract:
Some aspects of impregnating supports to produce heterogeneous catalysts have been considered for silica-supported samples: (i) the ease of determining the point of `incipient wetness' of the support, (ii) the reactivity of the support in aqueous solution and (iii) the separation of Ni2+ and Cu2+ when impregnated onto the silica from aqueous and alcoholic solutions.(13 refs)
Main heading: Catalyst supports
Controlled terms: Copper - Impregnation - Ions - Nickel - Separation - Silica - Solutions - Wetting
Uncontrolled terms: Heterogeneous catalysts - Incipient wetness
Classification Code: 544.1 Copper - 548.1 Nickel - 802.3 Chemical Operations - 803 Chemical Agents and Basic Industrial Chemicals - 804.2 Inorganic Compounds
Treatment: General review (GEN) - Experimental (EXP)
Database: Compendex
7. Instruments for preparation of heterogeneous catalysts by an impregnation method
Yamada, Yusuke1 ; Akita, Tomoki1; Ueda, Atsushi1; Shioyama, Hiroshi1; Kobayashi, Tetsuhiko1
Source: Review of Scientific Instruments, v 76, n 6, 2005; ISSN: 00346748; DOI: 10.1063/1.1938287; Article number: 062226; Publisher: American Institute of Physics Inc.
Author affiliation:
1 Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology, 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
Abstract:
Instruments for the preparation of heterogeneous catalysts in powder form have been developed. The instruments consist of powder dispensing robot and an automated liquid handling machine equipped with an ultrasonic and a vortex mixer. The combination of these two instruments achieves the catalyst preparation by incipient wetness and ion exchange methods. The catalyst library prepared with these instruments were tested for dimethyl ether steam reforming and characterized by transmission electron microscopy observations. © 2005 American Institute of Physics.(11 refs)
Main heading: Catalysts
Controlled terms: Ethers - Impregnation - Ion exchange - Robotics - Sol-gels - Solutions - Transmission electron microscopy - Ultrasonics
Uncontrolled terms: Automated liquid handling machines - Dimethyl ethers (DME) - Power dispensing robots - Vortex mixers
Classification Code: 804 Chemical Products Generally - 803 Chemical Agents and Basic Industrial Chemicals - 802.3 Chemical Operations - 804.1 Organic Compounds - 802.2 Chemical Reactions - 741.3 Optical Devices and Systems - 731.5 Robotics - 753.1 Ultrasonic Waves
Treatment: Experimental (EXP)
Database: Compendex
8. Design and preparation of heterogeneous catalysts by controlled chemical reactions with oxygen and hydrogen
Cocke, David L.1; Naugle, Donald G.1; Hess, Thomas R.1
Source: Materials Research Society Symposium - Proceedings, v 368, p 121-126, 1995, Synthesis and Properties of Advanced Catalytic Materials; ISSN: 02729172; Conference: Proceedings of the 1994 MRS Fall Meeting, November 28, 1994 - December 2, 1994; Publisher: Materials Research Society
Author affiliation:
1 Lamar Univ, Beaumont, United States
Abstract:
Chemical reactions of metals and strongly interacting alloys such as Cu-Mn, Ni-Ti, Ni-Hf and Ni-Zr with oxygen and hydrogen play important roles in the preparation, activation, and regeneration of many important heterogeneous catalytic systems involving supported and unsupported metals and alloys. Recent advances in the understanding of metal and alloy oxidation is bringing new insight into the reactive design and activation of bi- and multi-metallic catalysts. By surface studies of oxidation, thermal annealing and reduction of selected alloys and their thin films and reaction layers and products we have been able to delineate the factors which are most important to the oxide formation processes and the oxide reduction processes. Reaction models developed from these results are permitting the design of new catalyst systems and providing long sought understanding to explain specific aspects of well established metallic catalysts.(69 refs)
Main heading: Catalysts
Controlled terms: Annealing - Chemical reactions - Chemical variables control - Composition - Copper alloys - Mathematical models - Metals - Nickel alloys - Nitrogen - Oxidation - Oxygen - Reduction
Uncontrolled terms: Controlled chemical reactions - Copper manganese alloy - Heterogeneous catalysts - Nickel hafnium alloy - Nickel titanium alloy - Nickel zirconium alloy - Oxide formation processes - Oxide reduction processes - Thermal annealing
Classification Code: 531.1 Metallurgy - 544.2 Copper Alloys - 731.1 Control Systems - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally
Treatment: Theoretical (THR) - Experimental (EXP)
Database: Compendex
9. Preparation of heterogeneous catalysts from limestone for transesterification of vegetable oils-Effects of binder addition
Ngamcharussrivichai, Chawalit1, 2 ; Meechan, Warakorn1, 2; Ketcong, Anawat1; Kangwansaichon, Kunn3; Butnark, Suchada3
Source: Journal of Industrial and Engineering Chemistry, v 17, n 3, p 587-595, 25 May 2011; ISSN: 1226086X; DOI: 10.1016/j.jiec.2011.05.001; Publisher: Korean Society of Industrial Enineering Chemistry
Author affiliations:
1 Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand
2 Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand
3 PTT Research and Technology Institute, PTT Public Company Limited, Wangnoi, Ayutthaya 13170, Thailand
Abstract:
A limestone from the South of Thailand was utilized as a source for preparation of heterogeneous base catalysts for transesterification of various vegetable oils with methanol and ethanol has been investigated. Series of CMA catalysts were prepared through a wet mixing of ground limestone with different divalent and trivalent metal precursors, as binders, followed by drying and calcination. Effects of preparation conditions, including types of wetting media and metal precursors, metal compositions, and thermal treatment temperatures for the parent limestone and the mixed catalyst precursors, on the structural properties and the transesterification activity of the resultant catalysts, and on the catalyst formulation were studied. The catalytic test under batch conditions at 60 °C indicated an enhancement of the methyl ester formation over the catalysts prepared due to the presence of new active phase generated in situ upon the calcination of the mixed catalyst precursors at high temperatures. The metal precursors also acted as good binders in the catalyst shaping. Using the sodium salt of Al as a precursor remarkably improved the mechanical strength of the catalyst extrudates. The CMA catalysts can be regenerated and reused without a severe drop of the methyl ester yield. Moreover, the transesterification in a continuous-flow fixed bed reactor indicated a good activity and stability of the catalyst extrudates prepared. © 2011 The Korean Society of Industrial and Engineering Chemistry.(35 refs)
Main heading: Catalyst activity
Controlled terms: Binders -
Calcination - Esterification - Esters - Ethanol - Limestone - Lubricating oils - Metals - Methanol Transesterification Vegetable oils
Uncontrolled terms: Catalyst precursors - Catalytic tests - Continuous-flow - Extrudates - Fixed bed reactor - Ground limestone - Heterogeneous base catalyst - Heterogeneous catalyst - High temperature - In-situ - Metal composition - Metal precursor - Methyl esters - Preparation conditions - Sodium salt - Thailand - Thermal treatment temperature - Transesterification activity
Classification Code: 414 Masonry Materials - 531 Metallurgy and Metallography - 607.1 Lubricants - 802 Chemical Apparatus and Plants; Unit Operations; Unit Processes - 803 Chemical Agents and Basic Industrial Chemicals - 804.1 Organic Compounds
Database: Compendex
九．爱思唯尔sciencedirect全文期刊数据库
1.Preparation of Catalysts VII, Proceedings ofthe 7th International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts
Louvain-la-Neuve, Belgium
1–4 September 1998
Volume 118, Pages 1-987 (1998)
Edited by B. Delmon, P.A. Jacobs, R. Maggi, J.A. Martens, P. Grange and G. Poncelet
ISBN: 978-0-444-50031-1
2.Scientific Bases for the Preparation of Heterogeneous CatalystsProceedings of the 10th International Symposium, Louvain-la-Neuve, Belgium, July 11-15, 2010
Edited by E.M. Gaigneaux, M. Devillers, S. Hermans, P.A. Jacobs, J.A. Martens and P. Ruiz
ISBN: 978-0-444-53601-3
3. Scientific Bases for the Preparation of Heterogeneous Catalysts, Proceedings of the 9 International Symposium
Louvain-la-Neuve, Belgium
10–14 September 2006
Edited by E.M. Gaigneaux, M. Devillers, D.E. De Vos, S. Hermans, P.A. Jacobs, J.A. Martens and P. Ruiz
ISBN: 978-0-444-52827-8
4. Volume 112, Pages 1-523 (1997)
Spillover and Migration of Surface Species on Catalysts, Proceedings of the 4th International Conference on Spillover
Dalian, China
15–18 September 1997
Edited by Can Li and Qin Xin
ISBN: 978-0-444-82333-5
5. Volume 100, Pages vxii, 1-604 (1996)
catalysts in Petroleum Refining and Petrochemical Industries 1995, Proceedings of the 2nd International Conference on Catalysts in Petroleum refining and Petrochemical Industries
Kuwait
22–26 April 1995
Edited by M. Absi-Halabi, J. Beshara and A. Stanislaus
ISBN: 978-0-444-82381-6
6. Volume 161, Pages 1-282 (2006)Progress in Olefin Polymerization Catalysts and Polyolefin Materials, Proceedings of the First Asian Polyolefin Workshop
Nara, Japan
7–9 December 2005
Edited by Takeshi Shiono, Kotohiro Nomura and Minoru Terano
ISBN: 978-0-444-52751-6
十．美国化学会期刊全文数据库或美国威立Wiley Online Library 期刊全文数据库
1.DEWAXING CATALYSTS
Page bookmark SG182826 (A1) - DEWAXING CATALYSTS
Inventor(s): MCCARTHY STEPHEN J [US]; LAI WENYIH FRANK [US]; LACY DARRYL D [US]; KAY ROBERT E [US] + (MCCARTHY, STEPHEN, J, ; LAI, WENYIH, FRANK, ; LACY, DARRYL, D, ; KAY, ROBERT, E)
Applicant(s): EXXONMOBIL RES & ENG CO [US] + (EXXONMOBIL RESEARCH AND ENGINEERING COMPANY)
Classification: - international:
Euro: B01J21/06T; B01J29/70H; B01J29/74H; B01J35/00D; B01J35/02B; B01J35/02P; B01J35/10A6; B01J35/10C4; B01J37/00B; B01J37/04
Application number: SG20120005683 20110208
Priority number(s): US20100337694P 20100209; WO2011US23990 20110208
2.PROCESS FOR PREPARING POLYETHER CARBONATE POLYOLS WITH DOUBLE METAL CYANIDE CATALYSTS AND IN THE PRESENCE OF METAL SALTS
Page bookmark SG183223 (A1) - PROCESS FOR PREPARING POLYETHER CARBONATE POLYOLS WITH DOUBLE METAL CYANIDE CATALYSTS AND IN THE PRESENCE OF METAL SALTS
Inventor(s): WOLF AUREL [DE]; GRASSER STEFAN [DE]; GUERTLER CHRISTOPH [DE]; HOFMANN JOERG [DE] + (WOLF, AUREL, ; GRASSER, STEFAN, ; GUERTLER, CHRISTOPH, ; HOFMANN, JOERG)
Applicant(s): BAYER IP GMBH [DE] + (BAYER INTELLECTUAL PROPERTY GMBH)
Classification: - international:
- Euro: C08G65/26C; C08G65/26P1P; C08G65/26R
Application number: SG20120005870 20110217
Priority number(s): DE201010008410 20100218; WO2011EP52337 20110217
Also published as: DE102010008410 (A1) WO2011101403 (A1) CA2790038 (A1)
3. METHOD FOR ACTIVATING DOUBLE METAL CYANIDE CATALYSTS FOR PRODUCING POLYETHER CARBONATE POLYOLS
Page bookmark SG182437 (A1) - METHOD FOR ACTIVATING DOUBLE METAL CYANIDE CATALYSTS FOR PRODUCING POLYETHER CARBONATE POLYOLS
Inventor(s): GUERTLER CHRISTOPH [DE]; GRASSER STEFAN [DE]; HOFMANN JOERG [DE]; WOLF AUREL [DE] + (GUERTLER, CHRISTOPH, ; GRASSER, STEFAN, ; HOFMANN, JOERG, ; WOLF, AUREL)
Applicant(s): BAYER IP GMBH [DE] + (BAYER INTELLECTUAL PROPERTY GMBH)
Classification: - international:
- Euro: C08G/02B; C08G/18B; C08G/34
Application number: SG20120005065 20110118
Priority number(s): EP20100000511 20100120; WO2011EP50626 20110118
Also published as: WO20110120 (A1)
4.ADDITIVE FOR FLUID CATALYTIC CRACKING CATALYST
Page bookmark SG181882 (A1) - ADDITIVE FOR FLUID CATALYTIC CRACKING CATALYST
Inventor(s): HAYASHI SHIGENORI [JP]; NONAKA SEIJIRO [JP] + (HAYASHI, SHIGENORI, ; NONAKA, SEIJIRO)
Applicant(s): JGC CATALYSTS & CHEMICALS LTD [JP] + (JGC CATALYSTS AND CHEMICALS LTD)
Classification: - international:
- Euro: B01J21/12; B01J29/06; B01J29/08Y; B01J35/00D; B01J35/10A6; B01J37/00B4C; C10G11/04
Application number: SG20120004635 20101222
Priority number(s): JP20090295563 20091225; WO2010JP07443 20101222
Also published as: WO2011077721 (A1) KR20120085335 (A) JP2011147933 (A) AU2010334125 (A1)
5.N-HETEROCYCLIC CARBENE METALLACYCLE CATALYSTS AND METHODS
Page bookmark SG182221 (A1) - N-HETEROCYCLIC CARBENE METALLACYCLE CATALYSTS AND METHODS
Inventor(s): YING JACKIE Y [SG]; KANTCHEV ERIC ASSEN B [SG] + (YING, JACKIE Y, ; KANTCHEV, ERIC ASSEN B)
Applicant(s): AGENCY SCIENCE TECH & RES [SG] + (AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH)
Classification: - international:
Application number: SG20120004606 20070620
Priority number(s): SG20120004606 20070620
6.VARIATIONS ON PRINS-LIKE CHEMISTRY TO PRODUCE 2,5-DIMETHYLHEXADIENE FROM ISOBUTANOL
Page bookmark US2012271082 (A1) - VARIATIONS ON PRINS-LIKE CHEMISTRY TO PRODUCE 2,5-DIMETHYLHEXADIENE FROM ISOBUTANOL
Inventor(s): TAYLOR THOMAS JACKSON [US]; TAYLOR JOSHUA D [US]; PETERS MATTHEW W [US]; HENTON DAVID E [US] + (TAYLOR THOMAS JACKSON, ; TAYLOR JOSHUA D, ; PETERS MATTHEW W, ; HENTON DAVID E)
Applicant(s): GEVO INC [US] + (GEVO, INC)
Classification: - international: C07C1/207
Application number: US201213451026 20120419
Priority number(s): US201213451026 20120419; US201161477017P 20110419; US201161478607P 20110425
十一．欧洲专利数据库
1.Better sulphide catalysts through optimized active phase-support interaction
Keywords:Active phase-support interaction; Excess stoichiometric; Hydrodesulfurization; Hydrotreating catalyst; CoMoS phase;FeMoS phase;
Temperature programmed reduction; Temperature program medsulphidation;
XPS;EXAFS;XANES
Abstract:In this project, improved hydrotreating catalysts have been synthesized by varying the active phase-support interaction. This interaction has been changed by differing the calcining procedures and choice of catalyst precursors and carriers. The active phase consisted basically of molybdenum or tungsten disulphide, and Ni, Co, Cr or Fe as the promoter. Also phosphorus has been added as secondary promoter. As for the preparation of the catalysts, a new type of carrier, filamentary carbon supported by alumina, has been lysts have been developed and a better understanding of the fundamental characteristics of the catalysts has been acquired. Novel equipment has been developed. Two of its major features are a simple design and the possibility for the in situ measurement of physical parameters of the autoclave contents. For future development of the catalysts, a detailed kinetic analysis of their performance, and the application of in situ characterization techniques is of paramount importance.
2.On The State of the Co-MO-S Model
Abstract
The present article will discuss the recent developments which have taken place with the “Co-Mo-S model”. Some new results will also be presented to elucidate some of the controversies which have existed in the literature. The Co-Mo-S model, which was originally based on Mössbauer emission spectroscopy (MES) measurements, has now been confirmed and further developed by use of extended x-ray absorption fine structure (EXAFS), infrared spectroscopy (ir), x-ray photoelectron spectroscopy (XPS), high resolution and analytical electron microscopy (HREM and AEM), magnetic susceptibility and other methods.
3.Kinetic and Active Centre Studies on the Polymerization of Propylene using MgCl2 Supported Ziegler – Natta Catalysts and 1,3 Diether Donors
Keywords:active centre determination;MgCl2 supported catalysts;polypropylene (PP);Ziegler Natta polymerisation
Abstract
All polymerization experiments were carried out in a Büchi glass reactor capable of operating at propylene pressures of 1-7 atmospheres. Two types of MgCl2 supported catalysts with controlled morphology were studied, viz., catalyst systems containing either a 1,3 diether (Catalysts A and D), 9,9-bis (methoxymethyl) fluorene, or a simple diester (Catalysts B, C and E) such as diisobutylphthalate, used as reference systems. The kinetic behaviours of these catalysts were investigated for propylene polymerization. The 1,3-diether based systems proved to be excellent catalyst systems for propylene polymerization showing high polymerization activities and stable rate-time profiles and produced spherical polymer particles. Catalyst pre-treatment was found to play an important role in controlling the morphology of the final polymer. A tritiated alcohol radio-quenching technique was used to determine the concentrations active centres: values of 7.5 and 5.1 mol/mol % respectively were obtained for catalysts A and D and 3.5, 2.9 and 2.2 mol/mol % respectively were obtained for catalysts B, C and E. Catalysts A and D showed very high polymerization activities and also higher C0* values. All polymers produced were characterized by SEM, DSC, extraction and molecular weight determinations.
4.Kinetics of the esterification of acetic acid with 2-propanol: Impact of different acidic cation exchange resins on reaction mechanism
Abstract
The kinetics of the esterification of acetic acid with the secondary alcohol, 2-propanol, catalyzed by the cation exchange resins, Dowex 50Wx8-400, Amberlite IR-120, and Amberlyst 15 has been studied at temperatures of 303, 323, and 343 K; acid to alcohol molar ratios of 0.5, 1, and 2; and catalyst loadings of 20, 40, and 60 g/L. The equilibrium constant was experimentally determined, and the reaction was found to be mildly exothermic. External and internal diffusion limitations were absent under the implemented experimental conditions. Systems catalyzed by gel-type resins (Dowex 50Wx8-400 and Amberlite IR-120) exhibit some similarities in their reaction kinetics. Increase in reaction temperature, acid to alcohol ratio, and catalyst loading is found to enhance reaction kinetics for the three catalysts. The pseudohomogeneous (PH), Eley Rideal (ER), Langmuir Hinshelwood (LH), modified Langmuir Hinshelwood (ML), and Pöpken (PP) models were found to predict reaction kinetics with mean relative errors of less than 5.4%. However, the ML model was found to be better for predicting reaction kinetics in the systems catalyzed by gel-type resins, while the PP model was better for the system catalyzed by the macroreticular catalyst, Amberlyst 15.
5.Investigation of phthalocyanine catalysts for the aerobic synthesis of meso-substituted porphyrins
Keywords:phthalocyanine catalysts;tetraphenylporphyrin synthesis;
iron (II) phthalocyanine
Abstract:The aerobic oxidation process for the synthesis of porphyrins, previously performed using 5 mol % p-chloranil (TCQ), 5 mol % iron(II) phthalocyanine (FePc) and stoichiometric amounts of O2, has been refined using new phthalocyanine catalysts. Four phthalocyanine catalysts have been prepared, characterized by Mössbauer spectroscopy and examined for efficacy in the high concentration (0.1 M) synthesis of tetraphenylporphyrin at room temperature. Each phthalocyanine has been identified to be a μ-oxo dimer. Two catalysts are soluble (the μ-oxo dimers [(t-butyl)4FePc]2O and [(n-C6H13O)4FePc]2O) and enable homogeneous reactions, while two are insoluble (the μ-oxo(1) and μ-oxo(2) dimers of FePc, (FePc)2O) and give heterogeneous reactions. These four phthalocyanine compounds provide efficient catalysis at the 0.3–1 mol % level using only 1 mol % quinone or hydroquinone (TCQ, DDQ, TCQH2 or DDQH2), affording ∼25% yields of tetraphenylporphyrin in 60 min of oxidation. There are no discernible advantages of the homogeneous versus heterogeneous catalysts. The μ-oxo dimers are active, but FePc is inactive, at the 0.3 mol % level. The activity of the FePc sample at the 5 mol % level is attributed to residual μ-oxo dimer impurity. This aerobic oxidation process is superior to stoichiometric oxidation with TCQ or DDQ, and can be performed in the presence of BF3·O(Et)2, trifluoroacetic acid, or under neutral conditions. © 1997 John Wiley & Sons, Ltd.
6. Characterization of Synthetic Iron Oxides and their Performance as Support for Au Catalysts.
Keywords:alcohols; gold;hydrogenation; nanostructures; supported catalysts
Abstract
Gold(0) catalysts supported on ferric oxide are effective catalysts, and so far, the only heterogeneous ones known for the regioselective hydrogenation of ,β-unsaturated ketones to the corresponding ,β-unsaturated secondary alcohols. A set of ferric oxide samples, synthesized under strictly controlled conditions and thoroughly characterized (X-ray powder diffraction, Mössbauer spectroscopy, micro-Raman spectroscopy, transmission electron microscopy, temperature-programmed reduction), were employed as supports of gold(0) catalysts for this reaction.
7. Ring-opening polymerization of ε-caprolactone using perfluoroalkanesulfonates and perfluoroalkanesulfonimides as organic catalysts
Keywords:activation energy;caprolactone;kinetics (polym.);organic catalyst; polyester;recycling;ring-opening polymerization
Abstract:We examined ring-opening polymerizations (ROPs) of ε-caprolactone in toluene at 25–50 °C catalyzed by perfluoroalkanesulfonates and perfluoroalkanesulfonimides as organic catalysts. The ROPs proceeded quickly using these super Brönsted acids as catalysts. We synthesized poly(ε-caprolactone)s (Mn = 4.8 × 103–13.5 × 103) with low polydispersity (Mw/Mn = 1.10–1.48). These strong Brönsted acids catalyzed living polymerizations of ε-caprolactone. After polymerization, Nf2NH was recovered and reused. To survey solvents, CHCl3 and tetrahydrofuran (THF) were used instead of toluene as solvents for polymerization. When THF was used as a solvent, not only ε-caprolactone, but also THF was polymerized and incorporated into the polymer chain (incorporated THF ratio; 6–10%). We investigated the reaction kinetics and activation thermodynamics of the organic catalysts. The activation energy and the activation enthalpy values for the ROPs of ε-caprolactone using the catalyst having electron-withdrawing ligand were smaller, but the activation entropy value is more negative. Moreover, the ranked values of the activation enthalpy for the reaction well parallel the polarity of solvents. The ranked values of the activation free energies well parallel those of the times required for polymerization completion. Our findings indicate that the super Brönsted acids are excellent catalysts for rapid ROP of ε-caprolactone: they are more active than N, N-dimethylaminopyridine (DMAP) or stannous (II) 2-ethylhexanoate [Sn(Oct)2]. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011
十二．检索结论（文献综述）
近年来,多相化均相催化剂的研究,在有机合成、石油化工、精细化工等领域引起了广泛关注.和多相催化剂一样,负载化均相催化剂的性能也与制备技术有较大的关系.如在研究氯化钯、聚乙烯吡咯烷酮(PVP)和氧化铝所组成的双重负载催化剂时,虽然所用组分一样,比例相同,但由于负载顺序不同,所得催化剂的活性和重复使用性相差很大。
采用化学键连与溶胶-凝胶包容法制备锚链固定的多相催化剂。利用傅里叶变换红外光谱和核磁共振氢谱方法对催化剂及其前体进行表征。考察催化剂制备条件及环氧化反应条件对催化剂性能的影响,得到催化剂制备的优化条件及最佳环氧化反应条件。采用最佳条件下制备的催化剂催化环己烯的环氧化反应。将均相手性催化剂固定到有机聚合物、磁性的Fe3O4纳米颗粒、功能化修饰的分子筛等载体上;直接利用有机金属配合物中的阳离子和分子筛骨架中的阴离子相互作用实现多相化;采用金鸡纳生物碱等手性小分子为修饰剂和天然高分子为手性源制备多相催化剂。同时对不同途径制备的多相手性催化剂的结构特性、催化性能和立体选择性进行了评价。采用化学键联和溶胶-凝胶相结合的方法制备了带锚链固定的多相化铑膦络合物催化剂。利用FTIR,XPS,ICP及N2吸附对催化剂进行表征,揭示了催化剂内部结构与催化性能之间的关系。对催化剂的制备条件进行了优化,该催化剂用于1-己烯的氢甲酰化反应转化率达98.7％、选择性为99.5％、产物正构和异构的摩尔比为0.90。下载本文
