高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (4): 607.

• 论文 • 上一篇    下一篇

模拟热谱曲线法(Ⅰ)──简单级数化学反应

曾宪诚1, 张元勤1, 孟祥光1, 陈民助1, 秦自明1, 胡启山2   

  1. 1. 四川大学化学系, 成都 610064;
    2. 达县师专化学系
  • 收稿日期:1995-04-05 出版日期:1996-04-24 发布日期:1996-04-24
  • 通讯作者: 曾宪诚,男,56岁,教授.
  • 作者简介:曾宪诚,男,56岁,教授.
  • 基金资助:

    国家自然科学基金

Analog Thermogram Method(Ⅰ)──Chemical Reactions with Simple Order

ZENG Xian-Cheng1, ZHANG Yuan-Qin1, MENG Xiang-Guang1, CHEN Min-Zhu1, QIN Zi-Ming1, HU Qi-Shan2   

  1. 1. Department of Chenistry, Sichuan Univertsity, Chengdu 610064;
    2. Department of Chemistry, Daxian Teachers' College
  • Received:1995-04-05 Online:1996-04-24 Published:1996-04-24

摘要: 提出模拟各种简单级数化学反应的普适热谱曲线方程△=αte-kβk,建立了一种新的热动力学研究法──模拟热谱曲线法。导出了简单级数化学反应的动力学参数Kn和速率常数数kn的计算式。实验说明该方法对研究慢反应及较快的反应均适用,还能用于求热动力学体系的冷却常数。

关键词: 模拟热谱曲线方程, 模拟热谱曲线法, 简单级数反应, 热动力学研究法

Abstract: On the foundation of experimental results of thermokinetics, a general analogthermogramequation,△=αte-kβt,which can simulate the thermograms of chemical reactionswith simple order,has been proposed in this paper.Combined with the basic theory ofthermokinetics,a novel studying method of thermokinetics, the analog thermogram method,has been developed.The formulae for calculating kinetic parameter Kn and rate constant kn,which do not involve any instrument constants, have been derived.The expression of thecooling constant of thermokinetic system has been obtained at the same time.The analogthermogram method can be applied not only to studying slow chemical reactions, but also tostudying faster ones.In order to test the validity of this method, the saponifications of ethylpropionate and ethyl benzoate in aqueous ethanol solvent, the saponification of ethyl butyrate in aqueous solution, the substitution of benzyl chloride in aqueous DMSOsolvent, theformation of hexamethylenetetramine in aqueous solution, and the polymerization of acrylamide have been studied.The rate constants calculated with this method are in agreementwith those in the literatures, and therefore the analog thermogram method is believed to be Correct.

Key words: Analog thermogram equation, Analog thermogram method, Chemical reactionswith simple order, Research method of thermokinetics

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