配合物三水合草酸铝酸钾与二水合草酸铜酸钾的热分解反应及其动力学研究

Study on the Thermal Decomposition and Its Kinetics of K_3[Al(C_2O_4)_3]·3H_2O and K_2[Cu(C_2O_4)_2]·2H_2O

采用TG-DSC方法研究了K3[AL(C2O4)3].3H2O和K2[Cu(C2O4)2].2H2O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 thermal decomposition reactions and its konetic evaluation of the complexes K3 [ Al（C2O4）3 ]·3H2O and K2 [ Cu（C2O4）2 ]·2H2O has been investigated by TG- DSC methods. The decomposition reaction parameters lgA and Ea（kJ·mol^-1） of all steps of K3[Al（C2O4）3] ·3H2O and two steps of K2 [Cu（C2O4）2 ]·2H2O were evaluated by Friedman,Ozawa- Flynn- Wall,ASTME698 methods and their optimally kinetic function were fitted by Achar method, they belong to Bna.