Study on thermochemistry and thermal decomposition kinetics of Dy(Tyr)(Gly)3Cl3•3H2O

被引：1
|
作者：
Zhang, ZH [1 ]
Ku, ZJ
Liu, Y
Qu, SS
机构：
[1] Xiaogan Univ, Dept Chem, Xiaogan 432000, Hubei, Peoples R China
[2] Wuhan Univ, Coll Chem & Mol Sci, Dept Chem Biol, Wuhan 430072, Hubei, Peoples R China
来源：
CHINESE JOURNAL OF CHEMISTRY | 2005年 / 23卷 / 09期
关键词：
complex of rare earths; amino acid; standard enthalpy of formation; thermal analysis kinetics;
D O I：
10.1002/cjoc.200591146
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The complex of dysprosium chloride with glycine and L-tyrosine, Dy(Tyr)(Gly)(3)Cl(3)(.)3H(2)O, was synthesized and characterized. The standard molar formation enthalpy of Dy(Tyr)(Gly)(3)Cl(3)(.)3H(2)O at T=298.15 K was determined to be (-4287.10 +/- 2.14) kJ/mol. The kinetics of thermal decomposition of the complex was studied by non-isothermal TG-DTG curves. The kinetic parameters and mechanism function of the thermal decomposition reaction for its second step were proposed. The kinetic equation could be expressed as: da/dT=3.14 X 10(20) S-1/,beta exp(- 209.37 kJ(.)mol(.1)/RT)(1 -alpha)(2).
引用
收藏
页码：1146 / 1150
页数：5
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