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用TG-DTG-DTA(热重-微分热重-差热)联用技术研究了固体配合物[Nd2(Glu)2(H2O)8](ClO4)4.H2O在动态氮气气氛中的热分解过程.采用微分法中的Achar法和积分法中的Coats-Redfern法对热分解第三阶段的数据进行非等温动力学分析处理,推测出热分解机理为二级化学反应,求出了热分解反应的表观活化能和指前因子.用Doyle-Zsako法和Satava-Sestak法对所得结果进行了验证,进一步证明所得动力学参数和机理函数的正确性.4种方法求得的表观活化能和指前因子的平均值分别为198.75kJ/mol和1.69×1017s-1.
The thermal decomposition of solid complex [Nd2 (Glu) 2 (H2O) 8] (ClO4) 4.H2O in a dynamic nitrogen atmosphere was investigated by TG-DTG-DTA Process.According to the Achar method in the differential method and the Coats-Redfern method in the integral method, the non-isothermal kinetic analysis of the data in the third stage of thermal decomposition was carried out, and the thermal decomposition mechanism was assumed to be the second-order chemical reaction. The thermal decomposition The apparent activation energy and the pre-exponential factor of the reaction are validated by the Doyle-Zsako method and the Satava-Sestak method, which further prove the correctness of the kinetic parameters and mechanism functions obtained by the four methods. The average values of energy and pre-exponential factors were 198.75 kJ / mol and 1.69 × 10 17 s -1, respectively.