含氟咪唑盐离子液体催化甘油与甲醇醚化反应  

ETHERIFICATION OF GLYCEROL WITH METHANOL CATALYZED BY FLUOROANION IMIDAZOLIUM IONIC LIQUIDS

作　　者：王微[1] 董超琦[1] 安华良[1] 赵新强[1] 王延吉[1] 

机构地区：[1]河北工业大学绿色化工和高效节能河北省重点实验室,天津300130

出　　处：《精细石油化工》2013年第4期55-58,共4页Speciality Petrochemicals

基　　金：国家自然科学基金资助(21076059)

摘　　要：考察了一系列含氟咪唑盐离子液体对甘油与甲醇醚化反应的影响,发现[emim]BF4的催化效果较好,适宜的反应条件为:离子液体和甘油的摩尔比为4∶5、甲醇和甘油的摩尔比为10∶1、反应温度160℃、反应时间4h。此时,甘油的转化率为95.2%,单甲基甘油醚的收率为17.9%,二甲基甘油醚和三甲基甘油醚的收率分别为2.9%和4.1%。提出了离子液体[emim]BF4催化甘油与甲醇醚化反应的反应机理。The catalytic performance of some fluoroanion imidazolium ionic liquids in the etherification of glycerol with methanol was evaluated and the results showed that[emim]BF4had better catalytic performance.Under the suitable reaction conditions of that molar ratio of[emim]BF4/glycerol=4∶ 5,molar ratio of methanol/glycerol=10∶1,reaction temperature was 160℃and reaction time was 4 h,the conversion of glycerol could achieve 95.2%,the yield of methyl glycerol ethers,dimethyl glycerol ethers and trimethyl glycerol ethers were 17.9%,2.9%and 4.1%,respectively.Then the reaction mechanism for etherification of glycerol with methanol in the presence of[emim]BF4 was proposed.

关 键 词：甘油 甲醇 醚化反应 离子液体 

分 类 号：TQ426.92[化学工程]