全文下载：2012060556
吕俊敏， 范素兵， 张建利
（宁夏大学 能源化工重点实验室， 宁夏 银川 750021）
摘要： 采用两步法合成了3种碱性离子液体催化剂，其中\[Bmim\]OH催化酯交换合成碳酸二丙酯的性能较好，强碱有利于碳酸二丙酯的生成。在反应温度为130 ℃，反应时间为3 h，催化剂用量为n(催化剂)∶n(DMC)=0.007∶0.1，n(n-PrOH)∶n(DMC)=4∶1的最佳反应条件下，碳酸二丙酯收率为11.4%，且重复性良好，催化剂经多次使用后性能基本稳定。
关键词： 离子液体； 碳酸二丙酯； 碳酸二甲酯
中图分类号： O 643文献标志码： A
Synthesis of Dipropyl Carbonate via Transesterification over \[Bmim\]OH
L Jun-min, FAN Su-bing，ZHANG Jian-li
(Key laboratory of Energy Resources and Chemical Engineering of Ningxia,NingxiaUniversity,Yinchuan750021,China)
Abstract: Three basic ion liquids were synthesized by two-step method.Among then,\[Bmim\]OH showed the best catalytic performance for synthesis of dipropyl carbonate (DPC) via transesterification, suggesting that stronger base is benefit for producing DPC. The yield of DPC achieved 11.4% under the optimized reaction conditions of reaction temperature 130 ℃, reaction time 3 h, n(n-PrOH)∶n(DMC)=4∶1,and n(catalyst)∶n(DMC)=0.007∶0.1. The reaction was of good repeatability and the catalytic performance of catalyst kept stable after being reused several times.
Key words:ion liquid; dipropyl carbonate; dimethyl carbonate
收稿日期：2012-06-05
作者简介：吕俊敏（1979—），女，讲师.
