中文摘要：

制备了一种由氯化锌和三己基十四烷基季膦盐离子液体组成的Lewis酸／碱复合催化体系，将其用于CO2与环氧烷烃的环加成反应，表现出高催化活性。系统地考察了反应温度、反应压力、反应时间及催化剂组成的影响，结果表明，以[（C6H13）3P（C14H29）]Br／ZnCl2（物质的量之比为2：1）为催化剂，在CO2压力为2MPa，反应温度为100℃，反应15rain条件下，碳酸丙烯酯收率达到95％。研究表明该催化体系也适用于CO2与其他环氧化物的环加成反应。最后提出了该催化体系的反应机理。

英文摘要：

An efficient Lewis acid/base catalyst composed of zinc chloride and trihexyl（tetradecyl） phos- phonium bromide ionic liquid was developed and showed surprisingly high activities for the coupling reaction of CO2 and epoxides. The effects of reaction temperature, CO2 pressure, time and various compositions of the catalyst have been investigated systematically. A high PC yield（95% ）could be reached at 100 ℃ with a low CO2 pressure （2 MPa）for 15 min in the presence of [ （ C6 H13 ） 3P （ C14 H29 ） ] Br/ZnCl2 （ molar ratio is 2：1 ）. The catalyst was also applicable to the coupling reaction of CO2 and other epoxides. At the end,a possible reaction mechanism of the catalyst was proposed.