Kinetics of thermal decomposition of CeO nanocrystalline precursor prepared by precipitation
method

doi:10.1007/s11458-008-0035-y

Front. Chem. China

2008, Vol. 3

Issue (2) : 182-185 https://doi.org/10.1007/s11458-008-0035-y

Kinetics of thermal decomposition of CeO nanocrystalline precursor prepared by precipitation method

SONG Xiaolan, HE Xi, YANG Haiping, XU Dayu, JIANG Nan, QIU Guanzhou

Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University;

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Abstract The thermal decomposition of CeO₂ nanocrystalline precursor prepared by chemical precipitation method was investigated using thermo-gravimetric/differential scanning calorimetry (TG/DSC) and X-ray powder diffraction (XRD). In particular, the differential thermal analysis curves for the decomposition of CeO₂ nanocrystalline precursor were measured at different heating rates in air by a thermal analyzer (NETZSCH STA 449C, Germany). The kinetic parameters of the thermal decomposition of CeO₂ nanocrystalline precursor were calculated using the Kissinger method and the Coats-Redfern method. Results show that the apparent active energy E of the reaction is 105.51 kJ/mol, the frequency factor lnA is 3.602 and the reaction order n is 2. This thermal decomposition process can be described by the anti-Jander equation and a three-dimensional diffusion mechanism.

Issue Date: 05 June 2008

Cite this article:

HE Xi,SONG Xiaolan,YANG Haiping, et al. Kinetics of thermal decomposition of CeO nanocrystalline precursor prepared by precipitation method[J]. Front. Chem. China, 2008, 3(2): 182-185.

URL:

https://academic.hep.com.cn/fcc/EN/10.1007/s11458-008-0035-y
https://academic.hep.com.cn/fcc/EN/Y2008/V3/I2/182

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