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CoC₂O₄·2H₂O在空气中的热分解动力学研究

Kinetics for Thermal Decomposition of CoC₂O₄·2H₂O in Air

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【Author】 CONG Chang-Jie1 YI Tong-Yin2 HONG Jian-He1 TAO Hai-Bo1 ZHANG Ke-Li*,1,2,3(1College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072)(2Centre of Nanoscience and Nanotechnology Research, Wuhan University, Wuhan 430072)(3Institute of Chemistry and Chemical Engineering, Wuhan University, Wuhan 430072)

【机构】武汉大学化学与分子科学学院；武汉大学纳米科学和技术研究中心；武汉大学化学与分子科学学院武汉430072；武汉430072；武汉430072武汉大学纳米科学和技术研究中心；武汉430072武汉大学化学化工研究所；

【Abstract】 The thermal decomposition processes in solid state CoC2O4·2H2O have been studied in air using TG/DTA, DSC and XRD techniques. TG/DTA, DSC curves showed that the decomposition proceeded through two well-defined steps in air. Mass loss of the thermal decomposition of CoC2O4·2H2O was in good agreement with the theoretica1 one. XRD showed that the final product of the thermal decomposition was Co3O4. The activation energies were calculated through the ASTM E698 and Flynn-Wall-Ozawa (FWO) methods, and the possible conversion functions had been estimated through the multiple-linear regression method. The activation energies for the two steps decomposition of CoC2O4·2H2O were 140.18 kJ·mol-1 and 134.61 kJ·mol-1, respective1y.更多还原