Kinetics of the Dehydration of Zn(CH3 COO)2·2H2O

The dehydration of Zn(CH3COO)2·2H2O has been studied isothermally and non-isotherm ally using TG method. The isothermal TG studies were carried out at the temperature of 61.1, 62.8, 66.2, 69.9℃. The activation energy was obtained by means of the lnt=E/RT+lng(α)/Ausing the data at the same conversion rateα. Nonisothermal experiment was carried out at a rate of 10℃/min in 40 mL/minN2, Zn(CH3COO)2·2H2Odehydrated at 71~102℃. The data from nonisothermal experiment were analyzed by Doyle-Zsako method. Combined with the isothermal results the integral kinetic function g(α)=-ln(1-α)2/3 of the dehydration of Zn(CH3COO)2·2H2O activation energy 100.8 kJ/mol, preexponential factor ln(A/s-1)=36.09 and the kinetic compensation effect equation lnA=0.3339E+2.010 were found.