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The complex of Zn(AcO)22H2O and threonine was prepared in the mixture solvent of water-acetone, the com-position of which was identified as Zn(Thr)(AcO)22H2O by chemical and elemental analyses. The complex was investigated by XRD, IR, TG-DTG and DSC methods. The result of TG-DTG shows that the thermal decomposi-tion processes of the complex can be divided into three stages, which were dehydration (I), partial decomposition (II) and complete decomposition into ZnO (III). Dehydration enthalpy was 126.89 kJmol-1, decomposition enthalpy of the stage (II) was 79.50 kJmol-1. The study of non-isothermal kinetics shows that the mechanism of the dehydra-tion stage was Maple Power of n=3/2, the apparent activation energy E was 145.32 kJmol-1 and the pre-exponential factor A was 1.4125×1017 s-1, and that of ligand-losting process was nucleation and growth mechanism (Avrami-Erofeev equation n=1/2), its E was 189.33 kJmol-1, and A was 3.4674×1018 s-1. The empirical kinetics model equations of the investigated processes were proposed.
The complex of Zn (AcO) 22H2O and threonine was prepared in the mixture solvent of water-acetone, the com-position of which was identified as Zn (Thr) (AcO) 22H2O by chemical and elemental analyzes. The complex was investigated by XRD , IR, TG-DTG and DSC methods. The result of TG-DTG shows that the thermal decomposi- tion processes of the complex can be divided into three stages, which were dehydration (I), partial decomposition (II) and complete decomposition into Dehydration enthalpy was 126.89 kJ mol-1, and decomposition enthalpy of the stage (II) was 79.50 kJ mol-1. The study of non-isothermal kinetics shows that the mechanism of the dehydra tion stage was Maple Power of n = 3/2, the apparent activation energy E was 145.32 kJ mol-1 and the pre-exponential factor A was 1.4125 x 1017 s-1, and that of ligand-losting process was nucleation and growth mechanism (Avrami-Erofeev equation n = 1 / 2), its E was 189.33 kJ mol-1, and A was 3.4674 x 1018 s-1. The empirical kinetics model equations of the laboratory processes were proposed.