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采用TG-DSC方法研究了K3〔Al(C2O4)3〕.3H2O与K3〔Cr(C2O4)3〕.3H2O两个配合物的热分解反应过程,对其中部分热解过程进行了动力学计算.由Friedman、Ozawa-Flynn-Wall、ASTME698三种方法得出峰温时的活化能值与指前因子值.应用Achar方法计算拟合得到了比较合理的机理函数.
The pyrolysis reaction of K3 [Al (C2O4) 3] .3H2O with K3 [Cr (C2O4) 3] .3H2O was studied by TG-DSC method. The activation energy and the pre-exponential factor at peak temperature were obtained from Friedman, Ozawa-Flynn-Wall and ASTME698 methods, and the reasonable mechanism function was obtained by Achar’s method.