中文摘要：

采用酸功能化离子液体催化合成了柠檬酸三乙酯（TEC）。通过考察各种离子液体的催化活性及选择性，选定酸功能化离子液体VHSO3-pmim]CH3-ph—SO3为催化合成TEC的催化剂，较佳工艺条件为：柠檬酸用量0．15mol，催化剂用量为反应物总质量的10％，n（乙醇）：n（柠檬酸）=6．0：1，甲苯75mL，反应温度80～120℃，反应时间8h，TEC收率达到94．5％。分离出的离子液体未经任何处理重复使用10次后，收率为94．2％。

英文摘要：

Triethyl citrate （TEC） was synthesized using acidic functionalized ionic liquids as catalysts. Based on the study of the catalytic activity and the reusability of various ionic liquids, [HSO3-pmim] CH3-ph-SO3 was found to be the best catalyst for this reaction. The optimum reaction conditions were found as follows, citric acid 0.15 mol, 10.0% catalyst based on the reactants, n（ethyl alcohol） ： n （citric acid）=6.0 ： 1, toluene 75 mL, reaction temperature 80 -120 ℃, and reaction time 8 h. Under these conditions, the yield was 94.5%. [HSO3-pmim] CH3-ph-SO3 could be reused 10 times without any treatments, with the yield still kept at 94.2%.