Effects of imidazolium salts as cocatalysts on the copolymerization of CO2 with epoxides catalyzed by (salen)CrIIICl complex

被引：35

作者：

Xu, Xiaoqin

Wang, Congmin

Li, Haoran ^{[1
]}

Wang, Yong

Sun, Weilin

Shen, Zhiquan

机构：

[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China

[2] Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China

来源：

POLYMER | 2007年 / 48卷 / 14期

基金：

中国国家自然科学基金;

关键词：

imidazolium salts; carbon dioxide; copolymerization;

D O I：

10.1016/j.polymer.2007.05.008

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Imidazolium salts, most of which are room temperature ionic liquids (ILs), have been introduced as effective and tunable cocatalysts in the copolymerization of CO2 with epoxides catalyzed by (salen)(CrCl)-Cl-III complex for the first time. Effects of imidazolium salts with different alkyl chains as well as with different anions on the copolymerization were investigated. The results showed that the copolymerization was influenced obviously by the property of anion. In addition, the cation of imidazolium salts with longer alkyl chain length such as n-dodecyl (TOF, 242.5 h(-1). carbonate linkages > 99%) displays better activities and selectivity in the copolymerization as compared with N-Melm (TOF, 72.5 h(-1). carbonate linkages 94%). These results are instructive for further design of task-specific lLs as effective cocatalysts to improve the copolymerization of CO2 with epoxides. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：3921 / 3924

页数：4

共 51 条

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