In this study, basic ionic liquid 1-Butyl-3-Methylimidazolium imidazolide ([Bmim]Im) was immobilized on the SBA-15 and then used as catalyst for diacylglycerols (DAG) preparation through glycerolysis. The obtained SBA-15-[Bmim]Im was characterized by XRD and FT-IR. Results indicated that the [Bmim]Im was successfully immobilized onto the SBA-15, in addition, the immobilization of [Bmim]Im did not destroy the ordered mesostructure of the mesoporous SBA-15. The optimized conditions for DAG preparation was that, mole ratio of triacylglycerol to glycerol 2:1, [Bmim]Im amount 8 wt% of corn oil, reaction temperature 50 ℃ and time 12 h. 24.3 wt% of DAG was obtained at this condition. After immobilization, the reusability of the SBA-15-[Bmim]Im was improved. In addition, it could separate easily from the reaction mixture, and the amount of the [Bmim]Im was reduced after immobilization.%采用 SBA-15负载碱性离子液体1-丁基-3-甲基咪唑咪唑盐([Bmim]Im),然后用于催化甘油解反应制备甘油二酯(Diacylglycerol, DAG).XRD和FT-IR表征确认了[Bmim]Im已成功负载在SBA-15且并没有破坏其有序结构.甘油解反应单因素实验获得制备DAG的优化条件为:甘油三酯与甘油摩尔比2:1,催化剂[Bmim]Im添加量8 %,反应温度50 ℃,反应时间为12 h,所得DAG含量为24.3 %.SBA-15-[Bmim]Im催化剂经过简单的过滤即可与产物分离,在制备DAG反应中的重复利用性有所提高.离子液体固定化减少了其在催化实验中的用量.
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