化学学报 ›› 1999, Vol. 57 ›› Issue (11): 1239-1245. 上一篇    下一篇

研究论文

较快反应的热动力学天空

陈勇;陈晓楠;陈民助;曾宪诚;谢家庆;蒋福宾   

  1. 四川大学化学院;自贡师范高等专科学校化学系;广西大学化学化工学院
  • 发布日期:1999-11-15

Studies on thermokinetics for faster reactions

Chen Yong;Chen Xiaonan;Chen Minzhu;Zeng Xiancheng;Xie Jiaqing;Jiang Fubin   

  • Published:1999-11-15

根据热导式热量计的工作原理,提出了热导式热量计的界面模型,建立了感温滞后条件下热量计的理论方程,从而提出了一种较快反应的热动力学研究法---失真热谱曲线修正法,并利用该法成功地研究了几个较快的准一级和等浓度二级反应的热动力学。

关键词: 热动力学, 热量计, 热谱, 乙酸乙酯, 乙酸甲酯, 甲酸乙酯, 皂化作用

According to the principle and the heat balance equation of the conduction calorimeter, the interfacial model of the conduction calorimeter and a theoretical equation for the calorimeter in which the delay of sensing has been considered have been suggested. A method for modifying the distorted thermoanalytical curve into the ideal real thermoanalytical curve from which the kinetic parameters of faster reactions can be obtained directly is proposed. In order to test the validity of the theory and method, the saponifications of ethyl formate, ethyl acetate and methyl acetate in aqueous solution have been studied with this method, respectively. The experimental results show that the theory and method for faster reactions are correct.

Key words: THERMODYNAMICS, CALORIMETERS, THERMOGRAPHY, ETHYL ACETATE, METHYLACETATE, ETHYL FORMATE, SAPONIFICATION

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