期刊
KOREAN JOURNAL OF CHEMICAL ENGINEERING
卷 24, 期 5, 页码 917-919出版社
KOREAN INSTITUTE CHEMICAL ENGINEERS
DOI: 10.1007/s11814-007-0065-z
关键词
dimethyl carbonate; trdnsesterification; propylene carbonate; methanol; ionic liquid
The synthesis of dimethyl carbonate (DMC) through the transesterification of propylene carbonate (PC) with methanol was investigated by using imidazolium salt ionic liquid catalysts. 1-alkyl-3-methyl imidazolium salts of different alkyl group (C-2, C-4, C-6, C-8) and anions (Cl-, Br-, BF4-, PF6-) were used for catalysts. The reaction was carried out in an autoclave at 140-180 degrees C under carbon dioxide pressure of 1.48-5.61 MPa. The imidazolium salts of shorter alkyl group, and more nucleophilic counter anion exhibited higher catalytic activity. The conversion of PC increased as CO, pressure and reaction temperature increased. Kinetic studies were also performed to better understand the reaction mechanism.
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