Imidazolium ionic liquids/organic bases: Efficient intermolecular synergistic catalysts for the cycloaddition of CO2 and epoxides under atmospheric pressure

被引：53
|
作者：
Ji, Liangzheng [1 ]
Luo, Zhoujie [1 ]
Zhang, Yongya [1 ]
Wang, Rong [1 ]
Ji, Yayan [1 ]
Xia, Fei [1 ,2 ]
Gao, Guohua [1 ]
机构：
[1] East China Normal Univ, Shanghai Key Lab Green Chem & Chem Proc, Sch Chem & Mol Engn, 3663 North Zhongshan Rd, Shanghai 200062, Peoples R China
[2] East China Normal Univ, New York Univ, NYU ECNU Ctr Computat Chem, 3663 North Zhongshan Rd, Shanghai 200062, Peoples R China
来源：
MOLECULAR CATALYSIS | 2018年 / 446卷
基金：
中国国家自然科学基金;
关键词：
Carbon dioxide; Synergistic catalysis; Cycloaddition; Mechanism study; AB-INITIO PSEUDOPOTENTIALS; CARBON-DIOXIDE; CYCLIC CARBONATES; TRANSITION-ELEMENTS; POLY(IONIC LIQUID)S; ETHYLENE-OXIDE; CAPTURE; AMINES; CONVERSION; BMIMOAC;
D O I：
10.1016/j.mcat.2017.12.026
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
An intermolecular synergistic catalytic system consisting of ionic liquids and organic bases is developed for the cycloaddition of CO2 and epoxides. This strategy realizes the cycloaddition takes place under atmospheric pressure of CO2 with high activity. NMR, FT-IR spectroscopy and DFT calculations are applied to investigate the synergistic effect and reaction mechanism on molecules. Plausible ionic liquids/secondary amines and ionic liquids/tertiary amines catalyzed mechanisms are proposed and further confirmed by more detailed DFT calculations including reaction pathways and energy profiles, respectively. The procedure reported here represents a facile, cost-effective and energy-efficient route for chemical fixation of CO2 into 5-membered cyclic carbonates. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：124 / 130
页数：7
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