Kinetics of Thermal Decomposition of ZnAc2·2H2Oin Air Atmosphere

Chem. J. Chinese Universities ›› 2005, Vol. 26 ›› Issue (12): 2327.

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Kinetics of Thermal Decomposition of ZnAc₂·2H₂Oin Air Atmosphere

CONG Chang-Jie¹,LUO Shi-Ting¹, TAO You-Tian¹,ZHANG Ke-Li^1,2*

1. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China;
2. Centre of Nanoscience and Nanotechnology Research, Wuhan University, Wuhan 430072, China

Received:2004-12-17 Online:1905-03-14 Published:1905-03-14
Contact: ZHANG Ke-Li;E-mail:klzhang@whu.edu.cn

Abstract

Abstract:

The thermal decomposition processes occurring in the solid state ZnAc₂·2H₂Owere 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 ZnAc₂·2H₂Owere 119.82 and 66.82 kJ／mol, respectively.

Key words: TG/DTG/DTA; DSC; Thermal decomposition; Mechanism; Kinetics, TG/DTG/DTA, DSC, Thermal decomposition, Mechanism, Kinetics

CLC Number:

O643.12

TrendMD:

CONG Chang-Jie,LUO Shi-Ting,TAO You-Tian,ZHANG Ke-Li. Kinetics of Thermal Decomposition of ZnAc₂·2H₂Oin Air Atmosphere[J]. Chem. J. Chinese Universities, 2005, 26(12): 2327.

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Kinetics of Thermal Decomposition of ZnAc₂·2H₂Oin Air Atmosphere

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