中文摘要：

使用离子液体“充填型”支撑液膜，进行乙醇／水混合物的蒸汽渗透膜分离实验，比较了原料浓度、操作温度对分离性能的影响．结果表明，离子液体支撑液膜的蒸汽渗透过程能够实现乙醇脱水，用于制备无水乙醇．经过140h的实验测定，支撑液膜分离性能稳定．在50℃温度下，原料中含水摩尔分数0．024～0．24时，蒸汽渗透分离因子5．5～3．2，渗透通量55g／（m^2·h）．离子液体支撑液膜的蒸汽渗透膜分离过程，有望用于醇类水溶液组成的恒沸体系脱水．

英文摘要：

Dehydration of aqueous ethanol was conducted with supported liquid membrane （ SLM ） using room temperature ionic liquid （ RTIL ）, under various operation temperatures and feed compositions. It is proved that the SLM can be used to remove water from ethanol/water mixtures by vapor permeations; and membrane separation performance is stable during 140 hours measurements. For a water concentration in feed 0. 024 0.24（mole fraction）, the membrane has flux 55 g/（m^2·h）, and separation factor 5.5--.2 at 50 ℃. The supported liquid membranes with RTILs are a simple, easy scale- up approach to develop novel membrane material, would become a promising technique in the future.