功能性离子液体的合成和性能研究

Study on Synthesis and Properties of Functional Ionic Liquids

通过两步法合成了系列酸性磺基咪唑离子液体,并对其结构、熔点、溶解性、吸湿性、酸性催化及循环性能分别进行了表征,发现该3-磺基丁基-1-甲基咪唑鎓.对甲苯磺酸离子液体熔点低于-15℃,有一定的吸湿性,溶于水而不溶于甲苯和丙酮,具有很好的催化及循环性能.

A series of acidic sulio-imidazolium ionic liquids were synthesized through a typical two-step way, their struc ture, melting point, solubility in some solvents, ability in absorbing water, catalytic and recycle capability were characterized. For 3-sulfobutyl-1 methyl imidazolium with p-toluene sulfonic acid, it was found melting point below -15℃, limited a bility in absorbing water, solubility in water while not in toluene and acetone, good capability in catalyzing and recycling;