A consideration of errors and accuracy in the isoconversional methods

被引：117

作者：

Gao, ZM

Nakada, M

Amasaki, I

机构：

[1] Chiba Inst Technol, Dept Chem, Chiba 2750023, Japan

[2] Chiba Inst Technol, Dept Elect Engn, Narashino, Chiba 2750016, Japan

来源：

THERMOCHIMICA ACTA | 2001年 / 369卷 / 1-2期

关键词：

iterative procedure; activation energy; isoconversional methods; non-isothermal; kinetics;

D O I：

10.1016/S0040-6031(00)00760-7

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The conventional isoconversional plots, In beta versus 1/T and In(beta /T-2) versus 1/T. have some errors in calculating the activation energy due to the use of an approximate value of p(x). In order to obtain the 'exact' value of activation energy of a reaction, an iterative procedure has been established after the ratios, H(x) and h(x), were introduced to determine 'exact' p(x) instead of the approximate values of p(x) used in the conventional isoconversional plots. The iterative procedure is wide applicable, no matter how little or how great the E/RT value of the reaction is. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：137 / 142

页数：6

共 10 条

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[2]

Determination of arrhenius parameters from a single rate curve [J].