DOI: 10.1016/j.jcou.2014.11.002
Scopus记录号: 2-s2.0-84918810626
论文题名: An effective Ni/Zn catalyst system for the chemical fixation of carbon dioxide with epoxides
作者: Peng J. ; Yang H.-J. ; Song N. ; Guo C.-Y.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2015
卷: 9 起始页码: 16
结束页码: 22
语种: 英语
英文关键词: Chemical fixation of carbon dioxide
; Cyclic carbonate
; Epoxide
; Ni/Zn catalyst system
; Selectivity
Scopus关键词: Carbon
; Carbon dioxide
; Catalyst activity
; Chemical bonds
; Naphthalene
; Nickel
; Propylene
; Styrene
; Catalyst system
; Chemical fixation of carbon dioxide
; Cyclic carbonates
; Epoxide
; Influence of water
; Reaction mechanism
; Reaction temperature
; Turnover frequency
; Catalyst selectivity
英文摘要: A new catalyst system Ni(PPh3)2(Naphthyl)Cl/PPh3/n-Bu4NBr/Zn was developed and the system showed high activity and selectivity for the coupling reaction of carbon dioxide (CO2) and epoxides. The effects of reaction temperature, CO2 pressure and different component of catalyst system have been investigated systematically. It was found that a 92.6% conversion of propylene oxide (PO), high selectivity (>99%) and turnover frequency (TOF) value (661 h-1) could be achieved within 5 h in the presence of Ni(PPh3)2(Naphthyl)Cl/PPh3/n-Bu4NBr/Zn/PO (molar ratio = 1:2:4:20:3600) at a low pressure of CO2 (3.0 MPa) and temperature (130 °C) without any organic solvents. Moreover, the conversion yield for epichlorohydrin and styrene oxide were alomost 100% with 100% selectivity at the same conditions. The catalyst was also proved to be applicable to other terminal epoxides. Besides, the influence of water on the catalytic activity within the range of H2O/PO (0-15 molar ratio) was elucidated, and a reaction mechanism focusing on the active Ni(0) center has been proposed, which plausibly explained the reaction result. © 2014 Elsevier Ltd. All rights reserved. 资助项目: National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52983
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Peng J.,Yang H.-J.,Song N.,et al. An effective Ni/Zn catalyst system for the chemical fixation of carbon dioxide with epoxides[J]. Journal of CO2 Utilization,2015-01-01,9