Effect of imidazolium ionic liquids anions on copolymerization of CO2 with cyclohexene oxide by CrIII(Salen)Cl

被引：4
|
作者：
Comin, Edson [1 ]
de Souza, Roberto F. [1 ]
Bernardo-Gusmao, Katia [1 ]
机构：
[1] Univ Fed Rio Grande do Sul, Inst Chem, Av Bento Gongalves 9500, BR-91501970 Porto Alegre, RS, Brazil
来源：
CATALYSIS TODAY | 2017年 / 289卷
关键词：
Carbon dioxide; Polycyclohexene carbonate; Ionic liquids; Cr(Salen)Cl; CARBON-DIOXIDE; PROPYLENE-OXIDE; ALTERNATING COPOLYMERIZATION; EPOXIDES; COMPLEX; CATALYSTS;
D O I：
10.1016/j.cattod.2016.11.044
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The copolymerization of carbon dioxide and cyclohexene oxide was investigated without using solvent in the presence of ionic liquids based on 1-butyl-3-methylimidazolium with anions Cl- (BMI.Cl) and BF4(-) (BMI.BF4) were used as cocatalyst. The catalyst used was chloro (1R,2R)-(-)-[1,2-cyclohexanediamine-N,N'-bis(3,5-di-tert-butylsalicilidene)] chromium (III) [(Cr(Salen)Cl)]. Parameters like molar ratio catalyst/cocatalyst, pressure of CO2 and the nature of cocatalyst were evaluated. The imidazolium ionic liquids were effective as cocatalyst. The BMI.Cl provided better results than when used BMI.BF4. Poly(cyclohexene carbonate) PCHC with high carbonate units (98%) and lower polydispersity (1.4) was obtained under pressure of 30 bar of carbon dioxide and using 10 equivalents of BMI.Cl. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：115 / 120
页数：6
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