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Citation: ZHANG Yu-Dong, LI Bin-Jie, XU Xiang-Min, LI De-Liang. Thermal Decomposition Kinetics of ZnSn(OH)₆[J]. Acta Physico-Chimica Sinica, ;2007, 23(07): 1095-1098. doi: 10.3866/PKU.WHXB20070725 shu

Thermal Decomposition Kinetics of ZnSn(OH)₆

1.
College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475001, Henan Province, P. R. China; Laboratory for Special Functional Materials, Henan University, Kaifeng 475001, Henan Province, P. R. China

Received Date: 27 December 2006
Available Online: 10 May 2007

The thermal decomposition processes of ZnSn(OH)6 were studied using TG/DTG at various heating rates of 2.5, 5.0, 10.0, 15.0, 20.0 K·min -1. The results showed that the decomposition proceeded through one step in nitrogen atmosphere at the temperature range from 298 to 873 K. A od agreement was found between the mass loss of the thermal decomposition of ZnSn(OH)6 and the theoretical mass loss. The thermal decomposition kinetics was investigated employing non-isothermal multiple scanning method. The activation energy for the decomposition reaction of ZnSn(OH)6 was determined to be E=128.77 kJ·mol-1 in nitrogen atmosphere and the pre-exponential factor of its kinetics equations was calculated to be lg(A/s-1)=10.61. The mechanism function was obtained to be Mample Power theorem.
- TG/DTG; Thermal decomposition; Mechanism; Kinetics
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Thermal Decomposition Kinetics of ZnSn(OH)₆