化工进展

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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   

  • 出版日期:2009-07-05 发布日期:2009-07-05

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

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7 h，酯化率＞98.5%，精制后产品纯度>99.5%。

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%.

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