Lewis酸性离子液体的合成及其催化酯化性能研究  

Synthesis of a Lewis acid ionic liquid and its catalytic performance for esterification

作　　者：高鹏翔 武宇[1] 赵地顺[1] 翟建华[1] 张拴力 扈士海[2] GAO Peng-xiang;WU Yu;ZHAO Di-shun;ZHAI Jian-hua;ZHANG Shuan-li;HU Shi-hai(School of Chemical and Pharmaceutical Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;Shijiazhuang Xinyu Sanyang Industrial Co.,Ltd.,Shijiazhuang 051430,China)

机构地区：[1]河北科技大学化学与制药工程学院,河北石家庄050018 [2]石家庄新宇三阳实业有限公司,河北石家庄051430

出　　处：《现代化工》2019年第11期73-77,83,共6页Modern Chemical Industry

基　　金：国家自然科学基金(20576026)

摘　　要：以吗啡啉为原料,设计合成了Lewis酸性离子液体[Mor-C4]Br-CuCl2/Fe Cl3,通过催化合成乙酸乙酯考察了该离子液体的催化活性。结果表明,当n(CH3COOH)∶n(C2H5OH)=0. 55∶1、[Mor-C4]Br-CuCl2/Fe Cl3质量为醇质量的9. 80%、反应温度为83℃、反应时间为4. 26 h时,以环己烷为带水剂的收率可达96. 58%。离子液体重复使用6次仍具有较高的催化活性。同时以[Mor-C4]Br-CuCl2/Fe Cl3为催化剂催化合成了系列乙酸酯,获得较高的酯收率。[Mor-C4]Br-CuCl2/FeCl3,a Lewis acid ionic liquid,is prepared with morpholino as raw materials,and its catalytic activity is evaluated through the esterification of acetic acid and ethanol.The reaction process is optimized by the response surface method. The results show that the yield of ethyl acetate reaches 96. 58% when n(CH3 COOH) ∶n(C2 H5 OH) = 0. 55 ∶1,the amount of Lewis acid ionic liquid is 9. 80% of the mass of alcohol,the reaction temperature maintains at 83℃,the reaction lasts for 4. 26 h,cyclohexane is used as water carrying agent.[Mor-C4]Br-CuCl2/FeCl3 remains a high catalytic activity after being reused for 6 times. A series of acetates are synthesized over [Mor-C4]BrCu Cl2/Fe Cl3 and high yields are obtained.

关 键 词：Lewis酸性离子液体 催化剂 酯化反应 响应曲面 乙酸酯 

分 类 号：TQ032.4[化学工程]