硫酸氢钠催化合成马来酸二乙酯  

Synthesis of diethyl maleate catalyzed by sodium bisulfate

作　　者：游沛清[1] 李旺英[1] 文瑞明[1] 熊文高[1] 俞善信[1] 

机构地区：[1]湖南城市学院,湖南益阳413000

出　　处：《工业催化》2004年第3期26-28,共3页Industrial Catalysis

基　　金：湖南省科技计划资助项目 (0 3JZY3 0 3 4);湖南省教育厅科研基金资助项目 (0 1C0 2 2 )

摘　　要：在一水硫酸氢钠存在下,马来酸酐与乙醇反应合成马来酸二乙酯。当马来酸酐、乙醇和一水硫酸氢钠的摩尔比为1∶4∶0 36、环己烷为溶剂、回流分水40min时,酯产率可达74 4%。利用折射率、元素分析和红外光谱对酯进行了表征。Diethyl maleate was synthesized from maleic anhydride and ethyl alcohol in the presence of sodium bisulfate monohydrate. Diethyl maleate yield of 74.4% was obtained under the following condition: molar ratio of maleic anhydride, ethyl alcohol and sodium bisulfate monohydrate = 1∶4∶0.36, cyclohexane as solvent, reflux for separating water for 40 min. The ester product was characterized by refractive index, elemental analysis and IR.

关 键 词：马来酸二乙酯 马来酸酐 乙醇 一水硫酸氢钠 

分 类 号：TQ225.242[化学工程—有机化工] O624.94[理学—有机化学]