首页 | 本学科首页   官方微博 | 高级检索  
     

慢对峙反应的热动力学对比参量法
引用本文:陈勇,晏华,张斌,曾宪诚. 慢对峙反应的热动力学对比参量法[J]. 化学学报, 2002, 60(1): 19-23
作者姓名:陈勇  晏华  张斌  曾宪诚
作者单位:后勤工程学院油料应用工程系;四川大学化学学院
基金项目:重庆市应用基础研究基金资助项目.
摘    要:根据热动力学基本理论,推导了对峙反应的热动力学对比参量方程,建立了对峙反应对比参量法的数学模型。该法利用特征时间t~m和2t~m时对应的热谱数据计算反应的对比参量,进而解析出较慢对峙反应的速率常数和平衡常数。利用该法分别研究了硝基乙烷与氨和三(羟甲基)氨基甲烷质子转移反应的热动力学,实验结果表明了较慢对峙反应对比参量法的正确性。

关 键 词:对峙反应  热动力学  量热学  硝基乙烷  三羟甲基氨基甲烷    质子  转移反应  
修稿时间:2001-04-23

Thermokinetic reduced parameter method for slower opposing reactions
CHEN,Yong YAN,Hua ZHANG,Bin ZENG,Xian-Cheng. Thermokinetic reduced parameter method for slower opposing reactions[J]. Acta Chimica Sinica, 2002, 60(1): 19-23
Authors:CHEN  Yong YAN  Hua ZHANG  Bin ZENG  Xian-Cheng
Affiliation:CHEN,Yong YAN,Hua ZHANG,Bin ZENG,Xian-ChengDepartment of Applied Oil Engineering,Logistical Engineering University,Chongqing 400016 Faculty of Chemistry,Sichuan University,Chengdu 610064
Abstract:According to the theoretical basis of thermokinetics, the thermokinetic reduced parameter equation of opposing reaction has been derived, and the mathematical models of the reduced parameter method for opposing reaction have been established. Only needing the thermoanalytical data at the characteristic time parameter t~m and 2t~m from a single thermoanalytical curve, both the reduced energy and the reduced time parameter can be easily obtained, and then the rate constants and the equilibrium constant of slower opposing reaction can be easily obtained, and then the rate constants and the equilibrium constant of slower opposing reaction can be calculated conveniently. In order to test the validity of this method, the thermokinetics for the proton-transfer reaction of nitroethane with ammonia at 15 and 25℃, and with Tris at 15 and 30℃ have been studied, respectively. The experimental results indicate that the theory and method of the reduced parameter method for slower opposing reactions are correct.
Keywords:thermokinetics   reduced parameter method   opposing reaction   calorimetry
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《化学学报》浏览原始摘要信息
点击此处可从《化学学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号