稀土铈盐Ce(SO_4)_2·4H_2O/NH_2SO_3H催化合成柠檬酸三丁酯  

Synthesis of tributyl citrate catalyzed by Ce(SO_4)_2·4H_2O/ NH_2SO_3H

作　　者：魏猛 蒋平平 黄淑娟 杜晓晗 刘伟伟 

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122

出　　处：《化工进展》2009年第7期1257-1260,共4页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金资助项目(20771046)

摘　　要：研究了柠檬酸与正丁醇在Ce(SO4)2·4H2O/NH2SO3H复配催化剂催化作用下制备柠檬酸三丁酯的工艺条件。实验结果表明Ce(SO4)2·4H2O/NH2SO3H催化合成柠檬酸三丁酯的最佳反应条件为:醇酸摩尔比为4.0∶1,催化剂用量为1.5%(以柠檬酸质量计),m[Ce(SO4)2·4H2O]∶m(NH2SO3H)=2∶1,反应温度为150℃,反应时间为7h,酯化率>98.5%,精制后产品纯度>99.5%。The technical condition of synthesis tributyl citrate by citric acid and butanol, with Ce（SO4）2·4H2O/NH2SO3H as catalyst was studied. The optimum reaction conditions of esterification were determined as follows： molar ratio of butanol to citric acid 4.0 ： 1, amount of catalyst 1.5% （based on the mass of citric acid）, m[Ce（SOn）2·4H2O] ： m（NH2SO3H）=2 ： 1, reaction temperature 150℃, reaction time 7h, esterification yield could be up to 98.5%, and the purity of tributyl citrate was over 99.5%.

关 键 词：柠檬酸三丁酯 四水硫酸铈 氨基磺酸 酯化 

分 类 号：TQ225.242[化学工程—有机化工]