1-丁基-3-甲基咪唑四氟硼酸盐离子液体的合成与表征  

Synthesis and characterization of 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquids

作　　者：杨月静[1] 陈晓[1] 许军[1] 高传慧[1] 方璞[1] 武玉民[1] 

机构地区：[1]青岛科技大学化工学院,山东青岛266042

出　　处：《应用化工》2014年第6期1034-1036,1041,共4页Applied Chemical Industry

基　　金：山东省自然科学基金(ZR2011BM006)

摘　　要：以N-甲基咪唑和1-溴代正丁烷为原料,两步合成法制备了离子液体[bmim]BF4。考察了反应时间、反应温度、原料配比对中间体1-丁基-3-甲基咪唑溴盐[bmim]Br收率的影响和离子交换时间和离子交换温度对目标产物[bmim]BF4产率的影响。结果表明:①合成中间体[bmim]Br的最佳条件为:反应温度65℃,反应时间16 h,N-甲基咪唑与1-溴代正丁烷的摩尔比为1∶1.1,产品收率可达94.8%;②合成离子液体的最佳条件为:反应温度65℃,反应时间24 h。1-Butyl-3-methylimidazolium tetrafluoroborate ionic liquids（ [bmim]BF4） was synthesized using N-methyl imidazole and 1-bromobutane as the raw materials through a two-stage method. Effects of reaction time,reaction temperature and molar ratios of N-methyl imidazole to 1-butylbromide on the product yield were investigated. And effects of ion-exchanged time and ion-exchanged temperature on the yield were examined. The result showed that the optimum conditions were as follows： reaction temperature was65 ℃,reaction time 16 h and molar ratio of N-methyl imidazole to 1-butylbromide 1∶ 1. 1,the intermediate yield was 94. 8%. The optimum conditions of targeted product were as follows： ion-exchanged temperature was 65 ℃ and ion-exchanged time 24 h.

关 键 词：离子液体 1-丁基-3-甲基咪唑四氟硼酸盐 合成 表征 

分 类 号：TQ316.33[化学工程—高聚物工业]