物理化学学报 >> 2001, Vol. 17 >> Issue (02): 123-127.doi: 10.3866/PKU.WHXB20010207

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平行反应的热动力学研究法

陈勇;汪海东;曾宪诚   

  1. 四川大学化学学院,成都　610064
  • 收稿日期:2000-04-21 修回日期:2000-08-17 发布日期:2001-02-15
  • 通讯作者: 曾宪诚

Thermokinetic Research Method for Parallel Reactions

Chen Yong;Wang Hai-Dong;Zeng Xian-Cheng   

  1. Faculty of Chemistry,Sichuan University,Chengdu　610064
  • Received:2000-04-21 Revised:2000-08-17 Published:2001-02-15
  • Contact: Zeng Xian-Cheng

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摘要： 根据热动力学基本理论, 推导了平行准一级反应和平行准一二级反应的热动力学方程, 建立了热谱解析平行反应动力学参数的热动力学研究法, 并利用该法研究了两个模拟平行反应体系的热动力学, 实验结果验证了方法的正确性.

关键词: 热动力学, 热动力学研究法, 复合反应, 平行反应, 量热法

Abstract: According to the theoretical basis of thermokinetics,the thermokinetic equations of parallel first order reactions and parallel first and second order reactions have been derived,and the mathematical models for determining the kinetic parameters for parallel reactions from the thermoanalytical curve have been established in this paper.In order to test the validity of this method,two simulated parallel reaction systems (saponification of mixed esters in aqueous ethanol solvent) have been studied.The rate constants calculated by this method are in agreement with those published in literature,and therefore,the thermokinetic equations derived in this paper for parallel reactions is believed to be correct.

Key words: Thermokinetics, Thermokinetic research method, Composite reactions, 　Parallel reactions, Calorimetry