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1 Polish Journal of Chemical Technology

1 2006

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Correlation of kinetic parameters of sodium acetate thermal decomposition

Olszak-Humienik M., Możejko J.

Polish Journal of Chemical Technology

2006

Vol. 8, nr 2

22-25

Thermogravimetry and differential thermal analysis were used in the study of the kinetics of non-isothermal sodium acetate's thermal decomposition under an air atmosphere. The diagrams were recorded on a sample mass of 20 mg at temperatures ranging from 20 to 600°C. Five different heating rates were used. The relations of α vs. T were estimated from the mass losses. The values of the kinetic parameters (activation energy and the pre-exponential factor) of the thermal decomposition were calculated from α(T) data in several ways: by using the integral method, applying the Coats-Redfern approximation, the modified isoconversional Coats-Redfern method, the differential method of Friedman and the Kissinger's method. A correlation was found between kinetic parameters estimated by different kinetic methods.