1-丁基-3-甲基咪唑六氟磷酸盐离子液体合成

按照两步法合成了离子液体1-丁基-3-甲基咪唑六氟磷酸盐(Bmim]PF6),探讨了时间、温度、溶剂、反应物配比等对中间体1-丁基-3-甲基咪唑溴盐(Bmim]Br)以及离子液体Bmim]PF6产率的影响。结果表明,反应物配比为(1∶1.1)~(1∶2),温度70℃,反应30 h,中间体产率为95.91%;中间体中加入等摩尔KPF6,25℃下反应10 h后,离子液体产率为97.26%。

Synthesis of ionic liquids 1-butyl-3-methylimidazolium hexafluoroarsenate

Ionic liquids 1-butyl-3-methylimidazolium hexafluoroarsenate(PF6) were synthesized by the two-steps method.The factors affecting the product yield such as solvent,the ratio of reactants,time of synthesis,temperature have been studied.The results showed that the molar ratio of reactants(1 ∶1.1)~(1 ∶2),temperatrue 70 ℃,time 30 h,the yield of intermediate was 95.91%,then equimolar potassium hexafluorophosphate was added and the reaction time was 10 h under 25 ℃,the yield of ionic liquid PF6 is about 97.26%.