华侨大学学报（自然科学版）2016，Vol.37Issue(2)：218-223,6.DOI:10.11830/ISSN.1000-5013.2016.02.0218
柠檬酸三丁酯合成的热力学分析
Thermodynamic Analysis on Synthesis of Tributyl Citrate
摘要
Abstract
The group contribution method and other estimations were used to calculate the thermodynamic about citric acid and n-butyl alcohol reaction in the synthesis of tributyl citrate.The change of reaction enthalpy,entropy,Gibbs free energy,chemical equilibrium constant and citric acid conversion rate were studied at different temperature range from 275-450 K.At the same time the reactant molar ratio on the citric acid conversion rate was discussed.The results show that the reaction is endothermic;and in the separation of water cases,the Gibbs free energy change are all less than 0 at 366-450 K,decreasing with the increase of temperature.It shows that the reaction is feasible and high temperature is benefit for the reaction.Raising temperature or increasing alkyd acid mole ratio could improve the conversion rate.It is consistent with the actually measured value.However,the reaction is impossible to occur spontaneously without separation of the water.关键词
柠檬酸/正丁醇/柠檬酸三丁酯/热力学分析/基团贡献法Key words
citric acid/n-butanol/tributyl citrate/thermodynamic analysis/group contribution method分类
化学化工引用本文复制引用
林金清,陈风芳..柠檬酸三丁酯合成的热力学分析[J].华侨大学学报（自然科学版）,2016,37(2):218-223,6.基金项目
国家自然科学基金资助项目（20776057，21246008）；福建省科技计划重点项目 （）
