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化学学报
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化学学报 ›› 1995, Vol. 53 ›› Issue (4): 397-401. 上一篇    下一篇

研究论文

非等温液-固相酯化反应动力学研究

张保国;何静;段雪;孙鹏;王作新   

  1. 北京化工大学应用化学系
  • 发布日期:1995-04-15

A study for kinetics of liquid-solid phase esterifation under non-isothermal condition

ZHANG BAOGUO;HE JING;DUAN XUE;SUN PENG;WANG ZUOXIN   

  • Published:1995-04-15

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282

被引次数

3

根据稀土盐催化剂催化的乙二醇单乙醚醋酸酯的液相合成反应的特点, 导出了非等温变体积条件下的反应速率方程, 并提出了利用一条实验曲线, 计算动力学参数的动态方法, 以此为基础, 对不同实验条件下的多组实验数据进行了动力学处理。大量计算结果表明, 该反应服从二级动力学模型, 表观反应活化能为213.59kJ·mol^-^1, 指前因子为5.903×10^2^5dm^3·mol^-^1·min^-^1。计算结果的合理性及一致性, 进一步证明了动态原理用于液-固相反应体系的动力学研究是简便可行的。

关键词: 酯化, 等温, 动力学研究, 液固相反应

According to the characteristic of synthetization of 2-ethoxyethanol acetate catalysed by rare-earth salt, the equation of reaction rate is made up under non-isothermal and vol. ume-varying condition. A dynamic method used to calculate the kinetic parameters is also made up by a curve of experimental data. By kinetic calculation, it is obtained that the overall order is second, the apparent activation energy is 213.59kJ·mol^-^1, and the frequency factor is 5.903×10^2^5dm^3·mol^-^1·min^-^1.

Key words: ESTERIFICATION, ISOTHERMALS, KINETIC STUDY

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