草酸钾-过氧化氢加合物的热分解动力学研究

Research on the Decomposition Kinetics of Potassium Oxalate-Hydrogen Peroxide Adducts

利用程序升温法在NETZSCH STA409 PC/PG综合热分析仪上研究了草酸钾-过氧化氢在氮气氛围中的热分解动力学,测定了样品在氮气中不同升温速率下的TG和DSC曲线,采用多元非线性回归对其热分解动力学模型进行了筛选研究。结果表明,草酸钾-过氧化氢在氮气氛围中的热分解活化能为119.5 KJ mol-1,其热分解机理可用扩展Prout-Tompkins模型(Bna)和2级Avrami-Erofeev模型(A2)来描述。

The article introduces the thermal decomposition kinetics of potassium oxalate-hydrogen peroxide in nitrogen,using the programmed temperature method and NETZSCH STA409 PC/PG Comprehensive Thermal Analyzer,measures the sample s TG and DSC curves in the condition of different heating rates in Nitrogen,and analyses the kinetics model of thermal decomposition by the multiple nonlinear regression.The result shows the heat degradation activation energy of potassium oxalate-hydrogen peroxide in Nitrogen is 119.5KJ...