Thermal Behavior of Zn（Thr）SO4·H2O

被引：0
|
作者：
LI Huan yong 1
2. Department of Mathematics
机构：
来源：
ChemicalResearchinChineseUniversities | 2003年 / 02期
基金：
中国国家自然科学基金;
关键词：
Kinetics; Mechanism; Thermal decomposition; Solid complex Zn(Thr)SO 4·H 2O;
D O I：
暂无
中图分类号：
O642 [化学热力学、热化学、热力学平衡];
学科分类号：
摘要：
Solid complex Zn(Thr)SO 4·H 2O was prepared in a water acetone system. Under linearly increasing temperature, the non isothermal kinetics and the decomposition mechanism of Zn(Thr)SO 4·H 2O were studied by means of thermogravimetry and IR spectrometry. The thermal decomposition processes of the complex could be divided into three stages. The non isothermal decomposition mechanism and the kinetics parameters of the ligand lost process were obtained from an analysis to the TG DTG curves at various heating rates of 5 0, 10 0, 15 0 and 20 0 K/min by two integral and three differential methods. The results show that the random nucleation and the subsequent growth mechanism ( n =3/2) controlled the ligand lost process, the corresponding activation energy E and pre exponential constant A are 139 96 kJ/mol and 10 11 32 s -1 , respectively. The empirical kinetics model equation was constructed.
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页码：222 / 226
页数：5
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