Kinetics of thermal decomposition of ZnAc₂ · 2H₂O in air atmosphere

The thermal decomposition processes occurring in the solid state ZnAc₂ · 2H₂O were studied in air atmosphere by using TG-DTG/DTA, DSC and XRD techniques. TG-DTG/DTA, DSC curves show that the decomposition proceeded through two well-defined steps in air atmosphore. Mass loss of the thermal decomposition of ZnAc₂ · 2H₂O is in good agreement with the theoretical mass loss. XRD shows that the final product of the thermal decomposition was ZnO. The activation energies were calculated through the Friedman and Flynn-Wall-Ozawa (FWO) methods, and the possible conversion functions were estimated through the multiple-linear regression method. The activation energies for the two decomposition reactions of ZnAc₂ · 2H₂O were 119.82 and 66.82 kJ/mol, respectively.