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UV LASER INITIATED STEREOSELECTIVE HOMOGENEOUS CATALYSIS POLYMERIZATION OF PHENYLACETYLENE
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作者 张杰 佘永柏 +1 位作者 傅克坚 周以华 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1993年第3期236-241,共6页
In this paper, the stereoselective homogeneous catalysis polymerization of phenylacetylene by using two kinds of catalysts W(CO)_5CH_3I and W(CO)_4I_2 produced from UV laser photolysis of W (CO)_6 in CH_3I, I_2—C_6H_... In this paper, the stereoselective homogeneous catalysis polymerization of phenylacetylene by using two kinds of catalysts W(CO)_5CH_3I and W(CO)_4I_2 produced from UV laser photolysis of W (CO)_6 in CH_3I, I_2—C_6H_6 and CHI_3—C_6H_6 respectively was studied. The effects of laser energy, laser irradiation time and lifetime of catalyst on the polymerization of phenylacetylene were discussed. The photoproducts of W (CO)_6 in CH_3I, I2—C_6H_6 and CHI_3—C_6I_6 were determined by IR spectra. The structures of polyphenylacetylene obtained by W (CO)_5CH_3I and W (CO)_4I_2 catalysts were characterized by IR spectra and ~1H NMR spectra. 展开更多
关键词 UV laser initiation POLYPHENYLACETYLENE homogeneous catalysis polymerization.
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Transesterification Reaction of Waste Cooking Oil and Chicken Fat by Homogeneous Catalysis
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作者 Ignacio Contreras Andrade Jonathan Parra Santiago +2 位作者 Jose Ricardo Sodre Joseph Sebastian Pathiyamattom Carlos Alberto Guerrero-Fajardo 《Journal of Chemistry and Chemical Engineering》 2014年第7期736-743,共8页
In the last years, biodiesel production has been on a steady increase due to it is renewable and biodegradable fuel. The process to obtain biodiesel can be carried out using different raw materials. It is conlmonly pe... In the last years, biodiesel production has been on a steady increase due to it is renewable and biodegradable fuel. The process to obtain biodiesel can be carried out using different raw materials. It is conlmonly performed by transesterification reaction of vegetable oils with methanol and using a homogeneous or heterogeneous catalyst. This work seeks to compare the results produced in transesterification of wasted cooking oil and chicken fat by homogeneous catalysis with NaOH. Due to in each case triglyceride comes from different raw materials, operation conditions differ slightly, which is more evident in the values used for the temperature. For chicken fat was used temperature variations between 35 ℃ and 55 ℃, varying catalyst in percentages between 0.3% and 0.7% with a molar ratio 6:1 in all cases and a reaction time of I h. Likewise, the conditions used in the tmnsesterification process of waste cooking oil were temperature between 50 ℃ and 60 ℃ with a molar ratio 6/1 and 9/1 for alcohol and oil, and catalyst percentage between 0.5% and 0.7% by weight. The yields obtained were between 78% and 94%, or 83% and 95%, for chicken fat and wasted cooking oil, respectively. 展开更多
关键词 BIODIESEL TRANSESTERIFICATION homogeneous catalysis cooking oil chicken fat.
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Homogeneous,heterogeneous,and enzyme catalysis in microfluidics droplets
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作者 Fang Mei Hongyu Lin +3 位作者 Lianrui Hu Wei-Tao Dou Hai-Bo Yang Lin Xu 《Smart Molecules》 2023年第1期52-71,共20页
Microfluidics has received extensive attention due to its ability to rapidly prepare a large number of microdroplets with controlled sizes and defined morphologies.In addition to having large surface areas and control... Microfluidics has received extensive attention due to its ability to rapidly prepare a large number of microdroplets with controlled sizes and defined morphologies.In addition to having large surface areas and controllable confinement environments,these prepared microdroplets can be used as analytical detection devices to screen and optimize various kinetic parameters.This review summarizes recent advances in the microfluidic control of droplet-based catalytic reactions and discusses the role of these droplets in both homogeneous and heterogeneous catalyzes and in the catalysis of macromolecular biological enzymes in water-in-oil and oil-in-oil environments.Additionally,the existing problems and future development directions of droplets in catalysis are highlighted to promote the development of catalytic reactions in droplet media and provide guidance for the high-throughput screening of catalysts and the directed evolution of biological enzymes. 展开更多
关键词 enzyme catalysis heterogeneous catalysis homogeneous catalysis microfluidic droplet supramolecular chemistry
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Single-atom catalysis: Bridging the homo-and heterogeneous catalysis 被引量:21
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作者 Fang Chen Xunzhu Jiang +2 位作者 Leilei Zhang Rui Lang Botao Qiao 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2018年第5期893-898,共6页
Single-atom catalysis,the catalysis by single-atom catalysts(SACs),has attracted considerable attention in recent years as a new frontier in the heterogeneous catalysis field.SACs have the advantages of both homogeneo... Single-atom catalysis,the catalysis by single-atom catalysts(SACs),has attracted considerable attention in recent years as a new frontier in the heterogeneous catalysis field.SACs have the advantages of both homogeneous catalysts(isolated active sites)and heterogeneous catalysts(stable and easy to separate),and are thus predicted to be able to bridge the homo-and heterogeneous catalysis.This prediction was first experimentally demonstrated in 2016.In this mini-review,we summarize the few homogeneous catalysis progresses reported recently where SACs have exhibited promising application:a)Rh/ZnO and Rh/CoO SAC have been used successfully in hydroformylation of olefin of which the activity are comparable to the homogeneous Wilkinson’s catalyst;b)a Pt/Al2O3 SAC has shown excellent performance in hydrosilylation reaction;and c)M-N-C SACs(M=Fe,Co etc.)have been applied in the activation of C–H bonds.All of these examples suggest that fabrication of suitable SACs could provide a new avenue for the heterogenization of homogeneous catalysts.These pioneering works shed new light on the recognition of single-atom catalysis in bridging the homo-and heterogeneous catalysis. 展开更多
关键词 Single-atom catalysis Heterogenization of homogeneous catalysts Hydroformation HYDROSILYLATION Activation of C–H bonds
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Homogeneously Catalyzed Transesterification of Nigerian <i>Jatropha curcas</i>Oil into Biodiesel: A Kinetic Study
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作者 Elizabeth F. Aransiola Michael O. Daramola +2 位作者 Tunde Victor Ojumu Bamidele Ogbe Solomon Stephen K. Layokun 《Modern Research in Catalysis》 2013年第3期83-89,共7页
As a follow-up to our previous study on the transesterification of Nigerian Jatropha curcas oil into Biodiesel using homogenous catalysis, kinetic study of the reaction is hereby presented. The kinetic study revealed ... As a follow-up to our previous study on the transesterification of Nigerian Jatropha curcas oil into Biodiesel using homogenous catalysis, kinetic study of the reaction is hereby presented. The kinetic study revealed that the rate of formation of biodiesel can be increased by increasing reaction temperature and oil to alcohol molar ratio. The optimum reaction condition was established to be 60°C (reaction temperature) and 1:6 (oil to alcohol ratio). Accordingly, the highest biodiesel yield obtained from homogeneously catalyzed transesterification of Nigerian Jatropha curcas (JC) oil into Biodiesel was 86.61% w/w at 60°C with oil to alcohol ratio of 1:6. Furthermore, kinetic study also revealed that conversion of triglyceride to diglyceride was the rate determining step (RDS) of the overall reaction because activation energy of its backward reaction is lower than that of the forward reaction, indicating unstable nature and higher potential energy of the diglyceride in comparison to the triglyceride. 展开更多
关键词 homogenous catalysis TRANSESTERIFICATION BIODIESEL JATROPHA curcas
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Selective Oxidation of Propane to Isopropanol in Supercritical Propane Homogeneously Catalyzed by Iron Haloporphyrin
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作者 李红旗 赵锁奇 《催化学报》 SCIE CAS CSCD 北大核心 2001年第5期411-412,共2页
关键词 丙烷 选择性氧化 异丙醇 多卤代卟啉铁 超临界均相催化
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Recent Applications of Homogeneous Catalysis in Electrochemical Organic Synthesis 被引量:24
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作者 Xu Cheng Aiwen Lei +3 位作者 Tian-Sheng Mei Hai-Chao Xu Kun Xu Chengchu Zeng 《CCS Chemistry》 CAS 2022年第4期1120-1152,共33页
Although the combination of electrochemistry and homogeneous catalysis has proven to be a powerful strategy for achieving a diverse array of novel transformations,some challenges such as controlling the diffusion of c... Although the combination of electrochemistry and homogeneous catalysis has proven to be a powerful strategy for achieving a diverse array of novel transformations,some challenges such as controlling the diffusion of catalyst-related species and the instability of catalysts at electrodes remain to be overcome.Herein,we review recent advances in electrochemical homogeneous catalysis,focusing on electrochemical noble-transition-metal catalysis,photoelectrochemical catalysis,and electrochemical enantioselective catalysis.The topics discussed include:(1)how the noblemetal catalystworks in the presence of cathodic hydrogen evolution,(2)how the photocatalyst gets enhanced redox property,and(3)how the enantioselectivity is regulated in a catalytic electrochemical reaction. 展开更多
关键词 ELECTROCHEMISTRY homogeneous catalysis transition-metal catalysis electrophotocatalysis enantioselective catalysis
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Asymmetric Transfer Hydrogenation of Naphthol and Phenol Derivatives with Cooperative Heterogeneous and Homogeneous Catalysis 被引量:2
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作者 Xiaolin Li Wei Hao +2 位作者 Niannian Yi Yan-Mei He Qing-Hua Fan 《CCS Chemistry》 CSCD 2023年第10期2277-2289,共13页
Asymmetric hydrogenation of all-carbon aromatics is still a long-standing challenge in the area of asymmetric catalysis.To date,asymmetric(transfer)hydrogenation of naphthols and phenols remains unexplored.Here,we des... Asymmetric hydrogenation of all-carbon aromatics is still a long-standing challenge in the area of asymmetric catalysis.To date,asymmetric(transfer)hydrogenation of naphthols and phenols remains unexplored.Here,we describe a new strategy for such asymmetric transformation via a bimetallic cooperative heterogeneous and homogeneous catalysis.By using HCOONa as the hydrogen source,various naphthols and phenols were partially hydrogenated in HFIP catalyzed by commercial Pd/C catalyst to give ketone intermediates.Further adding the second chiral Ru-tethered-TsDPEN catalyst and MeOH realized the asymmetric reduction of the resulting ketones in a one-pot manner,furnishing chiral alcohols with good to excellent enantioselectivity(up to 99%ee).The use of HFIP is crucial for suppressing ketone over-reduction via heterogeneous catalysis.More importantly,tandem asymmetric transfer hydrogenation of naphthols was also achieved by tuning the volume ratio of mixed HFIP/MeOH solvent,affording chiral 1,2,3,4-tetrahyronaphthols with excellent enantioselectivity but relatively low yield and limited substrate scope. 展开更多
关键词 enantioselective hydrogenation arenols bimetallic catalysis heterogeneous catalysis homogeneous catalysis
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Cyclopalladated ferrocenylimines as efficient catalysts for homogeneous catalysis:A brief introduction to our preliminary achievements 被引量:2
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作者 WU YangJie YANG Fan ZHANG JinLi CUI XiuLing GONG JunFang SONG MaoPing LI TieSheng 《Chinese Science Bulletin》 SCIE EI CAS 2010年第25期2784-2793,共10页
Cyclopalladated ferrocenylimines as a novel kind of highly efficient palladium catalyst precursors, which are air-stable and easy to handle, have been successfully applied in a wide variety of catalytic reactions rang... Cyclopalladated ferrocenylimines as a novel kind of highly efficient palladium catalyst precursors, which are air-stable and easy to handle, have been successfully applied in a wide variety of catalytic reactions ranging from classical reactions, such as Heck, Suzuki, Sonogashira and Buchwald-Hartwig couplings, to cyanation, addition reactions of arylboronic acids, and coupling reactions involving terminal alkynes. The preliminary achievements regarding their applications to homogeneous catalysis are concisely described herein. 展开更多
关键词 二茂铁亚胺 催化剂前体 均相催化 催化效率 催化反应 芳基硼酸 加成反应
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Designed Bifunctional Ligands in Cooperative Homogeneous Gold Catalysis 被引量:1
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作者 Xinpeng Cheng Liming Zhang 《CCS Chemistry》 CAS 2021年第1期1989-2002,共14页
Over the past two decades,homogeneous gold catalysis has experienced exponential development and contributed a plethora of highly valuable synthetic methods to the synthetic toolbox.Metal–ligand cooperative catalysis... Over the past two decades,homogeneous gold catalysis has experienced exponential development and contributed a plethora of highly valuable synthetic methods to the synthetic toolbox.Metal–ligand cooperative catalysis is a versatile strategy for achieving highly efficient and/or novel catalysis but has seldom been explored in gold chemistry.This minireview summarizes the progress we have made in developing remotely functionalized biaryl-2-ylphosphine ligands and employing them in cooperative gold catalysis that achieves excellent catalytic efficiency or realizes previously unknown reactivities.This approach also provides new venues for implementing asymmetric gold catalysis. 展开更多
关键词 homogeneous gold catalysis cooperative catalysis PHOSPHINE bifunctional ligands
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Catalysis at the Homogeneous-Heterogeneous Chemistry Interface
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作者 Howard Alper 《复旦学报(自然科学版)》 CAS CSCD 北大核心 2007年第5期597-,共1页
1 Results Significant progress has been made in recent years in developing efficient, atom economical catalytic reactions of potential applicability to the pharmaceutical, petrochemical, and commodity chemical busines... 1 Results Significant progress has been made in recent years in developing efficient, atom economical catalytic reactions of potential applicability to the pharmaceutical, petrochemical, and commodity chemical business sectors. In some cases, homogeneous catalytic processes offer advantages, but in others the use of heterogenized homogeneous catalysis provides a competitive advantage concerning recyclability and catalyst recovery. This presentation will consider new approaches to cyclization reactions a... 展开更多
关键词 homogeneous-heterogeneous INTERFACE catalysis
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低温等离子体耦合Fe^(2+)均相催化降解甲苯和丙酮 被引量:1
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作者 刘蓉蓉 秦彩虹 +2 位作者 姜超超 黄家玉 张鹏 《中国环境科学》 EI CAS CSCD 北大核心 2024年第2期670-678,共9页
本文对比研究了两类典型VOCs(甲苯和丙酮)在单独NTP、NTP+LC/Fe^(2+)和NTP+LC/Fe^(2+)+PCA系统的降解效果.结果表明,甲苯和丙酮的去除率均随放电电压的升高而升高;在相同电压下,甲苯降解效率高于丙酮,但降解过程中O_(3)的产生量相当;当... 本文对比研究了两类典型VOCs(甲苯和丙酮)在单独NTP、NTP+LC/Fe^(2+)和NTP+LC/Fe^(2+)+PCA系统的降解效果.结果表明,甲苯和丙酮的去除率均随放电电压的升高而升高;在相同电压下,甲苯降解效率高于丙酮,但降解过程中O_(3)的产生量相当;当放电电压为22kV时,NTP+LC/Fe^(2+)+PCA系统的甲苯去除效率比单独NTP提高了18.2%,丙酮的去除效率提高了55.5%;NTP+LC/Fe^(2+)+PCA的O_(3)去除率可达100%;EPR和猝灭实验表明,羟基自由基和超氧自由基在LC/Fe^(2+)+PCA反应器中对VOCs去除有重要贡献.最后,结合测定的自由基和中间有机产物,推测了VOCs在NTP+LC/Fe^(2+)体系中的降解途径. 展开更多
关键词 甲苯 丙酮 低温等离子体 均相催化 亚铁离子
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Quasi-homogeneous photoelectrochemical organic transformations for tunable products and 100%conversion ratio
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作者 Cheng Lin Yuan Lu +7 位作者 Jiaming Miao Zhongyuan Ma Youngmoon Choi Yan Yang Chaoran Dong Jinyou Shen Jong Hyeok Park Kan Zhang 《Science Bulletin》 SCIE EI CAS CSCD 2024年第21期3395-3403,共9页
Photoelectrochemical(PEC)organic transformation at the anode coupled with cathodic H_(2) generation is a potentially rewarding strategy for efficient solar energy utilization.Nevertheless,achieving the full conversion ... Photoelectrochemical(PEC)organic transformation at the anode coupled with cathodic H_(2) generation is a potentially rewarding strategy for efficient solar energy utilization.Nevertheless,achieving the full conversion of organic substrates with exceptional product selectivity remains a formidable hurdle in the context of heterogeneous catalysis at the solid/liquid interface.Here,we put forward a quasi-homogeneous catalysis concept by using the reactive oxygen species(ROS),such as·OH,H_(2)O_(2) and SO_(4)^(2-),as a charge transfer mediator instead of direct heterogeneous catalysis at the solid/liquid interface.In the context of glycerol oxidation,all ROS exhibited a preference forfirst-order reaction kinetics.These ROS,however,showcased distinct oxidation mechanisms,offering a range of advantages such as100%conversion ratios and theflexibility to tune the resulting products.Glycerol oxidative formic acid with Faradaic efficiency(FE)of 81.2%was realized by the H_(2)O_(2) and·OH,while SO_(4)^(2-)was preferably for glycerol conversion to C3 products like glyceraldehyde and dihydroxyacetone with a total FE of about 80%.Strikingly,the oxidative coupling of methane to ethanol was successfully achieved in our quasi-homogeneous system,yielding a remarkable production rate of 12.27 lmol h^(-1) and an impressive selectivity of 92.7%.This study is anticipated to pave the way for novel approaches in steering solar-driven organic conversions by manipulating ROS to attain desired products and conversion ratios. 展开更多
关键词 Reactive oxygen species homogeneous catalysis Photoelectrochemical organic TRANSFORMATIONS Glycerol oxidation Methane oxidation
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Dangling Ligand Enables an Iron Hexa-Coordinated Molecular Catalyst for Water Oxidation by Photocatalysis
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作者 Bing Yang Qi Liu +7 位作者 Xiang-Zhu Wei Tao Lei Qing-Qing Yang Xu-Zhe Wang Jing-Xin Jian Xin Jiang Chen-Ho Tung Li-Zhu Wu 《CCS Chemistry》 CSCD 2024年第3期623-630,共8页
Photocatalytic water oxidation reaction by transition metal complexes remains a challenge because of their poor stability under irradiation,especially for earth-abundant metal catalysts.In this regard,ironbased water ... Photocatalytic water oxidation reaction by transition metal complexes remains a challenge because of their poor stability under irradiation,especially for earth-abundant metal catalysts.In this regard,ironbased water oxidation catalysts are prone to hydrolysis and/or dissociate the ligands to form nanoparticles under a real catalytic condition.Herein,we describe a unique hexa-coordinated catalyst 1[Fe^(II)(Py_(3)tacn)Cl_(2)]and its reference 2[Fe^(II)(PhPy_(2)tacn)Cl_(2)]with a dangling pyridyl ligand and a phenyl group,respectively.We anticipated that the dynamically open and close coordination behaviors of the pyridyl ligand enabled balance of the reactivity and stability of catalyst 1.To our delight,the“open form”of catalyst 1 provided a free coordination site,and the“close form”guaranteed its molecular integrity,resulting in a water oxidation reaction with high efficiency and robustness.The turnover number and turnover frequency values of 2332 and 60 s^(−1)are the highest known to date among iron-based homogeneous water oxidation systems under visible light irradiation. 展开更多
关键词 water oxidation PHOTOcatalysis homogeneous catalysis iron complexes dangling ligand intermediates characterization
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草酸分解工艺研究进展
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作者 张晓腾 邢运曈 +5 位作者 李磊 胡彦涛 陈勇 侯学锋 侯留东 马敬 《化学工程》 CAS CSCD 北大核心 2024年第6期82-88,共7页
在乏燃料后处理过程中,草酸常作为钚的沉淀剂,草酸钚滤液因为其中含有部分钚需要返回钚纯化循环,其中的草酸会影响钚的萃取,因此在返回钚纯化循环之前需分解滤液中的草酸。同时在民用化工领域草酸在有机物降解过程中作为中间体积累,威... 在乏燃料后处理过程中,草酸常作为钚的沉淀剂,草酸钚滤液因为其中含有部分钚需要返回钚纯化循环,其中的草酸会影响钚的萃取,因此在返回钚纯化循环之前需分解滤液中的草酸。同时在民用化工领域草酸在有机物降解过程中作为中间体积累,威胁水体安全,故在多个领域需要分解草酸。对民用化工领域和核化工领域采用的几种草酸分解工艺的研究进展进行总结,归纳几种草酸分解的工艺方法、应用情况并分析其特点,并根据乏燃料后处理领域的工艺特点和应用需求,分析其在后处理领域的应用前景,重点分析在乏燃料后处理领域得到应用的锰催化分解草酸工艺,并总结锰催化分解草酸的几种反应机理,并根据此提出工程应用存在的问题以及未来的研究方向。 展开更多
关键词 草酸分解 均相催化 锰催化 机理分析
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尿素与甲醇均相催化合成碳酸二甲酯的研究 被引量:37
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作者 赵新强 邬长城 +2 位作者 杨红健 王延吉 张继炎 《化学反应工程与工艺》 CAS CSCD 北大核心 2002年第3期200-205,共6页
 在对尿素与甲醇合成碳酸二甲酯(DMC)反应进行热力学分析的基础上较详细地研究了乙酸锌和二丁基氧化锡对该反应的催化作用。实验表明,以乙酸锌作催化剂时,DMC收率随尿素浓度增加而增加,但随催化剂用量的增加而下降,而且以尿素浓度的影...  在对尿素与甲醇合成碳酸二甲酯(DMC)反应进行热力学分析的基础上较详细地研究了乙酸锌和二丁基氧化锡对该反应的催化作用。实验表明,以乙酸锌作催化剂时,DMC收率随尿素浓度增加而增加,但随催化剂用量的增加而下降,而且以尿素浓度的影响为更强;结合观察催化剂在反应前后的色泽、形态变化和XRD分析,证明存在着乙酸锌与甲醇作用生成氧化锌、乙酸甲酯和水的副反应。水分是抑制催化剂活性的主要因素。以正交实验评价了各因素对二丁基氧化锡催化作用的影响,得到以下较佳因素水平:甲醇/尿素摩尔比44,二丁基氧化锡/尿素摩尔比0.2,反应温度180℃,反应时间6h。由极差分析该4因素的重要性次序为:反应温度>反应时间>原料摩尔比>催化剂用量。最后,就乙酸锌、二丁基氧化锡、异丙醇铝和氯化锌均对尿素和甲醇合成DMC反应有催化活性,认为该反应为Lewis酸催化反应。提出了其反应机理为甲醇在催化剂表面上发生解离吸附,形成的甲氧基进攻氨基甲酸酯的羰基碳与氨基进行交换形成碳酸二甲酯。 展开更多
关键词 均相催化 合成 尿素 甲醇 碳酸二甲酯 反应机理 催化剂 乙酸锌 二丁基氧化锡
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金属卟啉催化剂应用于均相氧化反应的研究进展 被引量:24
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作者 周贤太 纪红兵 +3 位作者 裴丽霞 佘远斌 徐建昌 王乐夫 《有机化学》 SCIE CAS CSCD 北大核心 2007年第9期1039-1049,共11页
详细介绍了金属卟啉作为催化剂应用于各种均相氧化反应,包括烷烃、烯烃、醇、醛、酚、硫化物、氮化物等化合物的氧化反应研究进展,认为金属卟啉模拟酶催化剂在均相氧化反应中将有更大的应用前景.
关键词 金属卟啉 均相氧化 仿生催化
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离子液体在绿色催化和清洁合成中应用的进展 被引量:31
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作者 张庆华 王瑞峰 +1 位作者 李作鹏 邓友全 《石油化工》 EI CAS CSCD 北大核心 2007年第10期975-984,共10页
综述了近年来离子液体在绿色催化和清洁合成中应用的研究进展;对离子液体的均相催化、离子液体的固载化、离子液体-超临界CO2(或离子液体-水)的两相过程、离子液体与其他技术的集成以及离子液体的工业化进程进行了简要介绍;对未来离子... 综述了近年来离子液体在绿色催化和清洁合成中应用的研究进展;对离子液体的均相催化、离子液体的固载化、离子液体-超临界CO2(或离子液体-水)的两相过程、离子液体与其他技术的集成以及离子液体的工业化进程进行了简要介绍;对未来离子液体在绿色催化中的研究方向(新的、功能特定、环境更加友好且价格低廉的离子液体的合成;技术的集成;生物催化;离子液体的固载化;与离子液体相关的反应器和反应工艺的建立等)进行了展望。 展开更多
关键词 离子液体 均相催化 固载化 两相过程 绿色催化 清洁合成
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铂族金属均相催化剂的研究和应用 被引量:25
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作者 潘再富 刘伟平 +1 位作者 陈家林 夏永明 《贵金属》 CAS CSCD 北大核心 2009年第3期42-49,41,共9页
铂族金属均相催化剂是一类特殊结构的金属配合物,具有均相催化氢化反应、羰基加成反应、酰氢化反应、烯烃氧化反应、C-C合成反应等的作用,在现代化学和制药工业中得到重要的应用。涉及的催化机理主要包括氧化加成、分子内配体重排、配... 铂族金属均相催化剂是一类特殊结构的金属配合物,具有均相催化氢化反应、羰基加成反应、酰氢化反应、烯烃氧化反应、C-C合成反应等的作用,在现代化学和制药工业中得到重要的应用。涉及的催化机理主要包括氧化加成、分子内配体重排、配体迁移和插入、还原消除。论文介绍和讨论了铂族金属均相催化剂的历史、应用、催化机制和最新的进展。 展开更多
关键词 催化剂 铂族金属 均相催化 机理 应用
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镍基均相络合催化剂苯加氢反应动力学研究 被引量:10
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作者 傅送保 段燕凌 +3 位作者 任军 刘郁东 朱泽华 闵恩泽 《石油化工》 EI CAS CSCD 北大核心 2006年第8期745-748,共4页
采用工业上应用较成功的HC-402-2型镍基均相Ziegler型络合催化剂,在排除扩散影响的条件下,研究了苯均相催化加氧制环已烷的反应动力学。在反应温度150~210℃、总压1.0~24MPa的范围内,考察了反应温度、氢分压和苯浓度对反应速率的... 采用工业上应用较成功的HC-402-2型镍基均相Ziegler型络合催化剂,在排除扩散影响的条件下,研究了苯均相催化加氧制环已烷的反应动力学。在反应温度150~210℃、总压1.0~24MPa的范围内,考察了反应温度、氢分压和苯浓度对反应速率的影响。实验结果表明,苯加氢均相催化反应对苯浓度的反应级数为零级,对氢分压的反应级数为一级,反成活化能为3643527J/mol。经检验,该动力学模型的相关系数大于0.9,模型合理,能够描述实际反应过程。 展开更多
关键词 均相催化 苯加氧 环己烷 动力学
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