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在程序升温条件下 ,用DSC研究了标题化合物的放热分解反应动力学 .用线性最小二乘法、迭代法以及二分法与最小二乘法相结合的方法 ,以积分方程、微分方程和放热速率方程拟合DSC数据 .在逻辑选择建立了微分和积分机理函数的最可几一般表达式后 ,用放热速率方程得到相应的表观活化能 (Ea)、指前因子 (A)和反应级数 (n)的值 .结果表明 :该反应的微分形式的经验动力学模式函数、Ea 和A值分别为 (1-α) 0 .44、2 30 .4kJ/mol和 10 18.16s-1.借助加热速率和所得动力学参数值 ,提出了标题化合物放热分解反应的动力学方程 .该化合物的热爆炸临界温度为 30 2 .6℃ .上述动力学参数对分析、评价标题化合物的稳定性和热变化规律十分有用 .
The kinetics of the exothermic decomposition reaction of the title compound was studied by DSC using temperature-programmed conditions. Linear least-squares method, iterative method, and the combination of dichotomy and least-squares method were used. The integral equation, differential equation and exothermic rate The equation is fitted to the DSC data.After the logical selection of the most general expressions for the differential and integral mechanism functions is established, the corresponding apparent activation energy (Ea), exponential factor (A) and reaction order (N) .The results show that the empirical dynamic mode function of the differential form of the reaction, Ea and A values are (1-α) 0.44, 2 30.4kJ / mol and 10 18.16s-1, respectively. Based on the heating rate and the obtained kinetic parameters, the kinetic equation of the exothermic decomposition reaction of the title compound was proposed.The critical temperature of thermal explosion of the compound was 30 2 .6 ℃. The above kinetic parameters were used to analyze and evaluate the stability of the title compound And the law of heat change is very useful.