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85 条 记 录,以下是 1-30

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Direct Arylation of α-Amino C(sp3)-H Bonds by Convergent Paired Electrolysis被引量:132收藏 分享
作者:Ma, Yueyue Yao, Xiantong Zhang, Lei Ni, Pufan Cheng, Ruihua Ye, Jinxing
机构:East China Univ Sci & Technol;East China Univ Sci & Technol
来源:ANGEWANDTE CHEMIE-INTERNATIONAL EDITION  2019
关键词:arylation   cross-coupling   C-H activation   electrocatalysis   tertiary amines  
Role of 1,2-Dimethoxyethane in the Transformation from Ethylene Polymerization to Trimerization Using Chromium Tris(2-ethylhexanoate)-Based Catalyst System: A DFT Study被引量:50收藏 分享
作者:Qi, Yuan Dong, Qi Zhong, Lei Liu, Zhen Qiu, Pengyuan Cheng, Ruihua He, Xuelian Vanderbilt, Jeffrey Liu, Boping
机构:E China Univ Sci & Technol;Westlake Chem Corp
来源:ORGANOMETALLICS  2010
关键词:Coordination reactions - Chromium compounds - Metals - Dimerization - Density functional theory - Ethylene  
Spin Surface Crossing between Chromium(I)/Sextet and Chromium(III)/Quartet without Deprotonation in SNS-Cr Mediated Ethylene Trimerization被引量:42收藏 分享
作者:Yang, Yun Liu, Zhen Zhong, Lei Qiu, Pengyuan Dong, Qi Cheng, Ruihua Vanderbilt, Jeffrey Liu, Boping
机构:E China Univ Sci & Technol;Westlake Chem Corp
来源:ORGANOMETALLICS  2011
关键词:Ethylene - Redox reactions - Free energy - Gibbs free energy - Density functional theory - Activation energy - Chromium compounds - Ground state  
Phillips Cr/Silica Catalyst for Ethylene Polymerization被引量:41收藏 分享
作者:Cheng, Ruihua Liu, Zhen Zhong, Lei He, Xuelian Qiu, Pengyuan Terano, Minoru Eisen, Moris S. Scott, Susannah L. Liu, Boping
机构:E China Univ Sci & Technol;Japan Adv Inst Sci & Technol;Technion Israel Inst Technol;Univ Calif Santa Barbara
来源:POLYOLEFINS: 50 YEARS AFTER ZIEGLER AND NATTA I: POLYETHYLENE AND POLYPROPYLENE  2013
关键词:Ethylene polymerization mechanisms   Heterogeneous model catalysts   Homogeneous model catalysts   Molecular modeling   Phillips Cr/silica catalyst   Polyethylene   Polymerization kinetics  
A Novel SiO2-Supported Cr-V Bimetallic Catalyst Making Polyethylene and Ethylene/1-Hexene Copolymers with Bimodal Molecular Weight Distribution被引量:39收藏 分享
作者:Zhao, Ning Cheng, Ruihua He, Xuelian Liu, Zhen Liu, Boping
机构:E China Univ Sci & Technol
来源:MACROMOLECULAR CHEMISTRY AND PHYSICS  2014
关键词:copolymerization   kinetics (polym.)   novel Cr-V bimetallic catalysts   short-chain branch distribution   temperature rising elution fractionation successive self- nucleation/annealing (TREF plus SSA)  
Mechanistic DFT Study on Ethylene Trimerization of Chromium Catalysts Supported by a Versatile Pyrrole Ligand System被引量:37收藏 分享
作者:Yang, Yun Liu, Zhen Cheng, Ruihua He, Xuelian Liu, Boping
机构:E China Univ Sci & Technol;Eindhoven Univ Technol
来源:ORGANOMETALLICS  2014
关键词:Chromium - Ground state - Chlorine compounds - Ethylene - Chromium compounds - Catalysts  
High-resolution spectroscopy (XPS, 1H MAS solid-state NMR) and DFT investigations into Ti-modified Phillips CrOx/SiO2 catalysts被引量:34收藏 分享
作者:Cheng, Ruihua Xu, Chen Liu, Zhen Dong, Qi He, Xuelian Fang, Yuwei Terano, Minoru Hu, Yatao Pullukat, Thomas J. Liu, Boping
机构:E China Univ Sci & Technol;Japan Adv Inst Sci & Technol;PQ Corp
来源:JOURNAL OF CATALYSIS  2010
关键词:Phillips CrOx/SiO2 catalyst   Ti-modification   X-ray photoelectron spectroscopy   H-1 magic-angle-spin solid-state nuclear magnetic resonance   Density functional theory  
Copolymerization of CO2 and propylene oxide using ZnGA/DMC composite catalyst for high molecular weight poly(propylene carbonate)被引量:33收藏 分享
作者:Meng, Qingyang Cheng, Ruihua Li, Jiajia Wang, Tingting Liu, Boping
机构:State Key Lab Chem Engn;East China Univ Sci & Technol
来源:JOURNAL OF CO2 UTILIZATION  2016
关键词:Carbon dioxide   Copolymerization   ZnGA/DMC   Composite catalyst   Synergistic effects  
Adsorption of TiCl4 and electron donor on defective MgCl2 surfaces and propylene polymerization over Ziegler-Natta catalyst: A DFT study被引量:30收藏 分享
作者:Cheng, Rui-hua Luo, Jun Liu, Zhen Sun, Jing-wen Huang, Wei-huan Zhang, Ming-ge Yi, Jian-jun Liu, Bo-ping
机构:E China Univ Sci & Technol;China Natl Petr Corp
来源:CHINESE JOURNAL OF POLYMER SCIENCE  2013
关键词:Supported Ziegler-Natta catalyst   Propylene polymerization   Defective MgCl2 surfaces   Electron donor   Density functional theory  
Active Site Transformation During the Induction Period of Ethylene Polymerization over the Phillips CrOx/SiO2 Catalyst被引量:29收藏 分享
作者:Zhong, Lei Liu, Zhen Cheng, Ruihua Tang, Siyang Qiu, Pengyuan He, Xuelian Terano, Minoru Liu, Boping
机构:E China Univ Sci & Technol;Japan Adv Inst Sci & Technol
来源:CHEMCATCHEM  2012
关键词:adsorption   heterogeneous catalysis   metathesis   reaction mechanisms   spin crossover  
Aminomethylation of Aryl Bromides by Nickel-Catalyzed Electrochemical Redox Neutral Cross Coupling被引量:28收藏 分享
作者:Ma, Yueyue Hong, Jufei Yao, Xiantong Liu, Chengyu Zhang, Ling Fu, Youtian Sun, Maolin Cheng, Ruihua Li, Zhong Ye, Jinxing
机构:East China Univ Sci & Technol;East China Univ Sci & Technol;East China Univ Sci & Technol;Guangdong Univ Technol;East China Univ Sci & Technol
来源:ORGANIC LETTERS  2021
Transition metal-free, visible-light-mediated construction of α,β-diamino esters via decarboxylative radical addition at room temperature被引量:27收藏 分享
作者:Wu, Guibing Wang, Jingwen Liu, Chengyu Sun, Maolin Zhang, Lei Ma, Yueyue Cheng, Ruihua Ye, Jinxing
机构:East China Univ Sci & Technol;East China Univ Sci & Technol
来源:ORGANIC CHEMISTRY FRONTIERS  2019
关键词:Transition metals - Light - Amino acids  
Novel SiO2-Supported Chromium Oxide(Cr)/Vanadium Oxide(V) Bimetallic Catalysts for Production of Bimodal Polyethylene被引量:26收藏 分享
作者:Cheng, Ruihua Xue, Xin Liu, Weiwei Zhao, Ning He, Xuelian Liu, Zhen Liu, Boping
机构:E China Univ Sci & Technol
来源:MACROMOLECULAR REACTION ENGINEERING  2015
关键词:bimodal molecular weight distribution   copolymerization   Cr-V bimetallic catalyst   kinetics (polym.)   short chain branch distribution (SCBD)  
A Triphenylsiloxy Complex of Chromium(II) as a Switchable Catalyst for Ethylene Polymerization and Nonselective Oligomerization被引量:25收藏 分享
作者:Qiu, Pengyuan Cheng, Ruihua Liu, Boping Tumanskii, Boris Batrice, Rami J. Botoshansky, Mark Eisen, Moris S.
机构:E China Univ Sci & Technol;Technion Israel Inst Technol
来源:ORGANOMETALLICS  2011
关键词:Polymerization - Coordination reactions - Crystal structure - Argon - Ethylene - Nuclear magnetic resonance spectroscopy - Aluminum compounds - Oligomers - Aluminum - Chromium compounds - Electron spin resonance spectroscopy - Oligomerization - Paramagnetic resonance  
Novel SiO2-Supported Silyl-Chromate(Cr)/Imido-Vanadium(V) Bimetallic Catalysts Producing Polyethylene and Ethylene/1-Hexene Copolymers with Bimodal Molecular-Weight Distribution被引量:25收藏 分享
作者:Zhao, Ning Cheng, Ruihua He, Xuelian Liu, Zhen Liu, Boping Zhang, Rui Gao, Yuxin Zou, Enguang Wang, Sihan
机构:E China Univ Sci & Technol;Petrochem Res Inst PetroChina
来源:MACROMOLECULAR CHEMISTRY AND PHYSICS  2014
关键词:bimodal molecular-weight distribution (MWD)   copolymerization   kinetics (polym)   imido V compounds   novel Cr-imido V bimetallic catalyst  
What Triggered the Switching from Ethylene-Selective Trimerization into Tetramerization over the Cr/(2,2′-Dipicolylamine) Catalysts?被引量:24收藏 分享
作者:Liu, Lin Liu, Zhen Tang, Siyang Cheng, Ruihua He, Xuelian Liu, Boping
机构:East China Univ Sci & Technol;Sichuan Univ;South China Agr Univ
来源:ACS CATALYSIS  2019
关键词:ethylene trimerization   ethylene tetramerization   switchable mechanism   effect of methyl substituent   DFT  
Mechanistic Aspects of Acrylic Acid Formation from CO2-Ethylene Coupling over Palladium- and Nickel-based Catalysts被引量:24收藏 分享
作者:Li, Yuanhui Liu, Zhen Cheng, Ruihua Liu, Boping
机构:East China Univ Sci & Technol;South China Agr Univ
来源:CHEMCATCHEM  2018
关键词:CO2-ethylene coupling   density functional calculations   ligand effect   mechanism   Ni-0   Pd-0-based catalysts  
Kinetic studies on the pyrrole-Cr-based Chevron-Phillips ethylene trimerization catalyst system被引量:23收藏 分享
作者:Tang, Siyang Liu, Zhen Yan, Xiaowei Li, Ning Cheng, Ruihua He, Xuelian Liu, Boping
机构:E China Univ Sci & Technol
来源:APPLIED CATALYSIS A-GENERAL  2014
关键词:Kinetic study   Ethylene trimerization   1-Hexene   Pyrrole-Cr based catalyst  
The First Vanadium-Oxide-Based UHMWPE Catalyst Supported on Chemically Modified Silica Gel被引量:20收藏 分享
作者:Jin, Yulong Cheng, Ruihua He, Xuelian Liu, Zhen Zhao, Ning Liu, Boping
机构:East China Univ Sci & Technol
来源:MACROMOLECULAR CHEMISTRY AND PHYSICS  2017
关键词:chloride-free   modification   polymerization   ultrahigh molecular weight polyethylene (UHMWPE)   vanadium-oxide-based catalysts  
Highly active bifunctional dual-arm organoboron catalysts bearing cooperative intramolecular structures for the copolymerization of CO2 and epoxides被引量:20收藏 分享
作者:Tong, Yutao Cheng, Ruihua Dong, Huan Liu, Zhen Ye, Jinxing Liu, Boping
机构:East China Univ Sci & Technol;Guangdong Univ Technol;South China Agr Univ
来源:JOURNAL OF CO2 UTILIZATION  2022
关键词:Carbon dioxide   Copolymerization   Polycarbonate   Organoboron catalysts   Cooperative effects  
A novel SiO2-supported inorganic and organic hybrid chromium-based catalyst for ethylene polymerization被引量:20收藏 分享
作者:Zhang, Shiliang Dong, Qi Cheng, Ruihua He, Xuelian Wang, Quntao Tang, Yan Yu, Yongling Xie, Kan Da, Jianwen Liu, Boping
机构:E China Univ Sci & Technol;SINOPEC
来源:JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL  2012
关键词:Phillips CrOx/SiO2 catalyst   S-2 catalyst   Inorganic and organic hybrid   chromium-based catalyst   Ethylene polymerization  
Unraveling the Effects of H2, N Substituents and Secondary Ligands on Cr/PNP-Catalyzed Ethylene Selective Oligomerization被引量:18收藏 分享
作者:Liu, Lin Liu, Zhen Cheng, Ruihua He, Xuelian Liu, Boping
机构:East China Univ Sci & Technol;South China Agr Univ
来源:ORGANOMETALLICS  2018
关键词:Oligomerization - Gibbs free energy - Chromium - Free energy - Ligands - Catalyst activity - Catalyst selectivity - Oligomers  
A Novel (SiO2/MgO/MgCl2)?TiClx Ziegler-Natta Catalyst for Ethylene and Ethylene/1-Hexene Polymerization被引量:18收藏 分享
作者:Wang, Jingwen Cheng, Ruihua He, Xuelian Liu, Zhen Tian, Zhou Liu, Boping
机构:E China Univ Sci & Technol
来源:MACROMOLECULAR CHEMISTRY AND PHYSICS  2015
关键词:copolymerization   polymer kinetics   polyoefins   Ziegler-Natta polymerization  
High-resolution XPS and DFT investigations into Al-modified Phillips CrOx/SiO2 catalysts被引量:18收藏 分享
作者:Ma, Yue Wang, Lisong Liu, Zhen Cheng, Ruihua Zhong, Lei Yang, Yun He, Xuelian Fang, Yuwei Terano, Minoru Liu, Boping
机构:E China Univ Sci & Technol;Japan Adv Inst Sci & Technol
来源:JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL  2015
关键词:Phillips CrOx/SiO2 catalyst   Al-modification   X-ray photoelectron spectroscopy   Density functional theory   Spin-crossover  
DFT Functional Benchmarking on the Energy Splitting of Chromium Spin States and Mechanistic Study of Acetylene Cyclotrimerization over the Phillips Cr(II)/Silica Catalyst被引量:18收藏 分享
作者:Liu, Zhen Cheng, Ruihua He, Xuelian Wu, Xiaojun Liu, Boping
机构:E China Univ Sci & Technol
来源:JOURNAL OF PHYSICAL CHEMISTRY A  2012
关键词:Catalysts - Chromium compounds - Catalysis - Coordination reactions - Energy gap - Benchmarking - Surface reactions - Density functional theory - Lighting - Quantum chemistry - Potential energy - Hydrogen bonds - Spin dynamics  
Reactivity and Regioselectivity of Methylacetylene Cyclotrimerization over the Phillips Cr/Silica Catalyst: A DFT Study被引量:18收藏 分享
作者:Liu, Zhen Cheng, Ruihua He, Xuelian Liu, Boping
机构:E China Univ Sci & Technol
来源:ACS CATALYSIS  2013
关键词:methylacetylene cyclotrimerization   Phillips chromium catalyst   DFT   TOF   spin flipping  
Efficient cycloaddition of CO2 and epoxides to cyclic carbonates using salen-based covalent organic framework as a heterogeneous catalyst被引量:17收藏 分享
作者:Tong, Yutao Cheng, Ruihua Dong, Huan Liu, Boping
机构:East China Univ Sci & Technol;Guangdong Univ Technol;South China Agr Univ
来源:JOURNAL OF POROUS MATERIALS  2022
关键词:CO2 cycloadditions   Epoxides   Cyclic carbonate   Salen   COF  
DFT and PIO study of the influences of Mo valance state and surface hydroxyl on supported-MoOx catalysts for ethylene polymerization被引量:17收藏 分享
作者:Cao, Xiaochun Cheng, Ruihua Liu, Zhen Wang, Lisong Dong, Qi He, Xuelian Liu, Boping
机构:E China Univ Sci & Technol
来源:JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL  2010
关键词:Supported-MoOx catalyst   Ethylene polymerization   Molecular modeling   Valence state   Surface hydroxyl  
Ethylene/1-Hexene Copolymerization with A Novel SiO2-Supported Inorganic and Organic Hybrid Chromium-based Catalyst被引量:17收藏 分享
作者:Zhang, Shiliang Cheng, Ruihua Dong, Qi He, Xuelian Wang, Quntao Tang, Yan Yu, Yongling Xie, Kan Da, Jianwen Terano, Minoru Liu, Boping
机构:E China Univ Sci & Technol;Qilu Branch Co;Japan Adv Inst Sci & Technol
来源:MACROMOLECULAR REACTION ENGINEERING  2013
关键词:ethylene/1-hexene copolymerization   inorganic and organic hybrid chromium-based catalyst   kinetics (polym)   separation of polymer   short chain branches distribution  
Computational fluid dynamics simulation and experimental study on mixing performance of a three-dimensional circular cyclone-type microreactor被引量:16收藏 分享
作者:Hou, Shiyu Sun, Maolin Cao, Liming Liang, Chaoming Yang, Jiaxin Zhou, Xinggui Ye, Jinxing Cheng, Ruihua
机构:East China Univ Sci & Technol;Guangdong Univ Technol;East China Univ Sci & Technol
来源:CHINESE CHEMICAL LETTERS  2024
关键词:Microfluidics   Passive microreactor   CFD simulation   Extraction   Liquid -liquid biphase reaction  
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