[1]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.[doi:10.11830/ISSN.1000-5013.2016.02.0218]
　LIN Jinqing,CHEN Fengfang.Thermodynamic Analysis on Synthesis of Tributyl Citrate[J].Journal of Huaqiao University(Natural Science),2016,37(2):218-223.[doi:10.11830/ISSN.1000-5013.2016.02.0218]
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柠檬酸三丁酯合成的热力学分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第37卷
期数:
2016年第2期
页码:
218-223
栏目:
出版日期:
2016-03-20

文章信息/Info

Title:
Thermodynamic Analysis on Synthesis of Tributyl Citrate
文章编号:
1000-5013(2016)02-0218-06
作者:
林金清;  陈风芳
华侨大学 材料科学与工程学院, 福建 厦门 361021
Author(s):
LIN Jinqing;  CHEN Fengfang
College of Material Science and Engineering, Huaqiao University, Xiamen 361021, China
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
Keywords:
citric acid;  n-butanol;  tributyl citrate;  thermodynamic analysis;  group contribution method
分类号:
TQ013.1
DOI:
10.11830/ISSN.1000-5013.2016.02.0218
文献标志码:
A
摘要:
针对柠檬酸与正丁醇反应合成柠檬酸三丁酯的体系,采用基团贡献法和其他计算方法进行热力学的相关估算与分析.在275~450 K范围内,研究反应焓变、熵变、Gibbs自由能变化量、化学平衡常数、柠檬酸的平衡转化率随温度的变化情况,并探讨反应物摩尔比对柠檬酸转化率的影响.计算结果表明:该反应为吸热反应;在分水情况下,在366~450 K范围内,Gibbs自由能变化量小于0,并随着温度的升高而减小,说明该反应是可行的,升温有利于反应的进行;升高温度或者增大反应物的醇酸摩尔比,可提高柠檬酸的转化率,且与实测值非常接近
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.

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备注/Memo

备注/Memo:
收稿日期: 2015-07-07
通信作者: 林金清(1963-),男,教授,博士,主要从事离子液体热力学及其应用的研究.E-mail:Linlab@hqu.edu.cn.
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(2013H0027)
更新日期/Last Update: 2016-03-20