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Synthesis of tributyl citrate catalyzed by Ce(SO4)2·4H2O/ NH2SO3H

WEI Meng,JIANG Pingping,HUANG Shujuan,DU Xiaohan,LIU Weiwei   

  • Online:2009-07-05 Published:2009-07-05

稀土铈盐Ce(SO4)2·4H2O/NH2SO3H催化合成柠檬酸三丁酯

魏 猛,蒋平平,黄淑娟,杜晓晗,刘伟伟   

Abstract: 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(SO4)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%.

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4.01,催化剂用量为1.5%(以柠檬酸质量计),m[Ce(SO4)2·4H2O]m(NH2SO3H)=21,反应温度为150 ℃,反应时间为7 h,酯化率>98.5%,精制后产品纯度>99.5%

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