THERMOGRAVIMETRIC STUDY OF THE DEHYDRATION REACTION OF LiCl•H2O

被引：25
|
作者：
Masset, P. J. [1 ]
机构：
[1] Dechema eV, Karl Winnacker Inst, D-60486 Frankfurt, Germany
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2009年 / 96卷 / 02期
关键词：
activation energy; chloride; dehydration; kinetics; salt; DIFFERENTIAL THERMAL ANALYSIS; ELECTROLYTES; CONDUCTIVITY; DESIGN;
D O I：
10.1007/s10973-008-9399-y
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The dehydration of LiCl center dot H2O was studied under inert helium atmosphere by DTA/TG for different heating rates. The dehydration of LiCl center dot H2O proceeds through a two step reaction between 99-110 and 160-186 degrees C, respectively. It leads to the formation of LiCl center dot 0.5H(2)O as intermediate compound. The proposed mechanism is: LiCl center dot H2O ->(LiCl)-Li-Td, 1 center dot 0.5H(2)O+0.5H(2)O (step 1) and LiCl center dot 0.5H(2)O ->(LiCl)-Li-Td, 2+0.5H(2)O (step 2) Based on the temperature peak of the DTA signals the activation energies of the two reactions were determined to be 240 kJ mol(-1) (step 1) and 137 kJ mol(-1) (step 2), respectively.
引用
收藏
页码：439 / 441
页数：3
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