材料与冶金学报2017，Vol.16Issue(2)：116-123,8.DOI:10.14186/j.cnki.1671-6620.2017.02.007
十水草酸镧的热分解及其动力学分析
Thermal decomposition and kinetics analysis of lanthanum oxalate decahydrate
摘要
Abstract
Thermal decomposition behavior of lanthanum oxalate was studied by the simultaneous thermal analysis technique TG-DTA in an air atmosphere.The thermal decomposition kinetics parameters of La2(C2O4)3?10H2O was determined by using Ozawa-Flynm-Wall method、Kissinger method、Crane method and simultaneous thermal analysis method.Curve of TG showed : the thermal decomposition of La2(C2O4)3?10H2O has 4 stages, the first two stages are the dehydration process, the succedent two stages are the thermal decomposition of La2(C2O4)3.The four stages' apparent activation energies are 83.92、76.04、136.26、162.61 kJ?mol-1, the exponential factors are about 4.92×1010、6.1×107、2.1×109、8.46×106 s-1 respectively, the reaction order is about one,and the decomposition mechanism of the third step is controlled by F1 according to Coats-Redfem method.关键词
G-DTA/La2(C2O4)3?10H2O/热分解/动力学参数Key words
TG-DTA/La2(C2O4)3?10H2O/thermal decomposition/kinetic parameters分类
矿业与冶金引用本文复制引用
邓庚凤,姬传红,谢耀,谭敏,蔡晨龙,王赟,曾青云..十水草酸镧的热分解及其动力学分析[J].材料与冶金学报,2017,16(2):116-123,8.基金项目
国家自然科学基金资助项目(51564022). （51564022）
