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用热分析(TG/DTG/DTA,DSC)、X射线衍射(XRD)技术研究了固态物质Mg(CH3COO)2.4H2O在氩气中热分解过程.热分析结果表明,Mg(CH3COO)2.4H2O在氩气中分两步分解.其质量变化率与理论计算相吻合.XRD结果表明,Mg(CH3COO)2.4H2O分解最终产物为MgO.用Friedman和FWO法对分解过程的活化能E进行了初步计算,依此为初始值,用多元非线性回归得到了分解步骤可能的机理函数和动力学参数.
The thermal decomposition of solid Mg (CH3COO) 2.4H2O in argon was investigated by thermal analysis (TG / DTG / DTA, DSC) and XRD.The thermal analysis results showed that Mg (CH3COO) Argon gas decomposition in two steps.The mass rate of change consistent with the theoretical calculation.XRD results show that Mg (CH3COO) 2.4H2O decomposition of the final product is MgO.The Friedman and FWO method for the decomposition of the activation energy E preliminary calculations , Based on this as initial value, the possible mechanism functions and kinetic parameters of decomposition step were obtained by multivariate nonlinear regression.