New temperature integral approximate formula for non-isothermal kinetic analysis

被引：147

作者：

Wanjun, T ^{[1
]}

Yuwen, L ^{[1
]}

Hen, Z ^{[1
]}

Zhiyong, W ^{[1
]}

Cunxin, W ^{[1
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2003年 / 74卷 / 01期

基金：

中国国家自然科学基金;

关键词：

approximate formula; non-isothermal kinetic analysis; temperature integral; TG;

D O I：

10.1023/A:1026310710529

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A new approximate formula for temperature integral is proposed. The linear dependence of [GRAPHICS] on x has been established. Combining this linear dependence and integration-by-parts, new equation for the evaluation of kinetic parameters has been obtained from theabove dependence, which can be put in the form [GRAPHICS] The validity of this equation has been tested with data from numerical calculating. And its deviation from the values calculated by Simpson's numerical integrating was discussed. Compared with several published approximate formulae, this new one is much superior to all other approximations and is the most suitable solution for the evaluation of kinetic parameters from TG experiments.

引用

页码：309 / 315

页数：7

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