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在水-丙酮溶液中制备了Zn(Leu)SO4·0.5H2O的配合物。通过热重和红外分析,研究了它的热分解机理,可分为三步完成。第一阶段配合物的脱水过程在60～180℃,形成Zn(Leu)SO4,第二阶段,Zn(Leu)SO4进一步分解为Zn(Leu)SO4·9ZnSO4,随后其在728℃完全分解为ZnO。在不同线性升温5.0,10.0,15.0,20.0K·min-1条件下,用两种积分法和三种微分法研究了题目化合物失去配体过程的非等温动力学,相应过程的表观活化能E为133.78kJ·mol-1,指前因子A为108.19s-1,配体失去过程为三维扩散机理控制,并建立了反应过程的动力学方程。
The complex of Zn (Leu) SO4 · 0.5H2O was prepared in water-acetone solution. Through thermal gravimetric and infrared analysis, its thermal decomposition mechanism, can be divided into three steps to complete. In the second stage, Zn (Leu) SO4 is further decomposed into Zn (Leu) SO4.9ZnSO4, which is then decomposed completely into ZnO at 728 ℃ . The non-isothermal kinetics of the title compounds losing their ligands were investigated by two integral methods and three differential methods under different linear heating conditions of 5.0, 10.0, 15.0 and 20.0 K · min-1. The apparent activation energy E is 133.78kJ · mol-1, the pre-exponential factor A is 108.19s-1, the loss of ligand is controlled by the three-dimensional diffusion mechanism, and the kinetic equation of the reaction process is established.