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草酸亚铁在氩气中的热分解机理和动力学研究
Kinetics of Thermal Decomposition of FeC2O4·2H2O in Ar
【Author】 k.I. Zhang,L.N. Wang, J.B.Yuan,J.T. Sun (College of Chemistry and Molecular sciences, Wuhan University, Wuhan; 430072, Hubei, China Centre of Nanoscience and Nanotechnology Research, Wuhan University, Wuhan 430072, Hubei China)
【机构】 武汉大学化学与分子科学学院；
【摘要】 <正>用热分析(TG／DTA,DSC)、X射线衍射(XRD)技术研究了固态物质FeC2O4·2H2O在氮气中热分解的过程。热分析结果表明,FeC2O4·2H2O在氩气中分两步分解,其失重率与理论计算失重率相吻合。XRD结果表明FeC2O4·2H2O分解产物为Fe3O4。用Friedman法和Flynn-Wall-Ozawa(FWO)
【Abstract】 The thermal decomposition processes taking place in the solid state FeC2O4·2H2O have been studied in Ar using TG-DTG/DTA, DSC and XRD techniques. TG-DTG/DTA, DSC curves showed that the decomposition proceeds through two well-defined steps in Ar. Mass loss of the thermal decomposition of FeC2O4·2H2O is in good agreement with the theoretical mass loss. XRD showed that the final product of the thermal decomposition was Fe3O4.The activation energies were calculated through the Friedman and Flynn-Wall-Ozawa (FWO) methods, and the possible conversion functions had been estimated through the multiple linear regression method and the multiple non-linear regression method respectively.
【Key words】 CoC2O4·2H2O； TG-DTA； DSC； XRD； thermal decomposition； mechanism； kinetics；
- 【会议录名称】 中国化学会第十三届全国化学热力学和热分析学术会议论文摘要集
- 【会议名称】中国化学会第十三届全国化学热力学和热分析学术会议
- 【会议时间】2006-08
- 【会议地点】中国河南新乡
- 【分类号】O643.12
- 【主办单位】中国化学会、河南师范大学