期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 20, 期 5, 页码 3102-3107出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2013.11.051
关键词
Ionic liquids; Zinc halide; Silica gel; Cycloaddition; CO2; Epoxides
资金
- National Research Foundation of Korea [NRF 2012-001507]
- Global Frontier Program
- Brain Korea 21 PLUS Project
Cycloaddition of carbon dioxide and epoxides was investigated using zinc halide based Lewis acidic ionic liquids (ILs) as catalysts. ILs such as 1-butyl-3-methylimidazolium bromide (BMImBr), 1-butylpyridinium bromide (BPyBr), tetra-n-butylammonium bromide (TBABr) were mixed with zinc halide and supported on silica gel to produce heterogeneous catalysts. Catalytic reaction tests demonstrated that the incorporation of zinc ions can significantly enhance the catalytic activity of the silica-supported ILs for the cycloaddition of CO2 to epoxides in solvent-free conditions. BPyBr-ZnCl2/SiO2 showed the highest propylene carbonate yield of 98% when the reaction was carried out with 0.5 g of catalyst at 120 degrees C at 1.89 MPa of CO2 pressure for 4 h. The immobilized zinc containing IL catalyst could be reused for at least four cycles without any considerable loss of its activity. (C) 2013 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据