Model-Fitting Approach to Kinetic Analysis of Non-Isothermal Oxidation of Molybdenite

Document Type: Research Note

Authors

Department of Materials Engineering, Isfahan University of Technology, Isfahan, I.R. IRAN

Abstract

The kinetics of molybdenite oxidation was studied by non-isothermal TGA-DTA with heating rate 5 ºC.min-1.The model-fitting kinetic approach applied to TGA data .The Coats-Redfern method used for model fitting. The popular model-fitting gives excellent fit for non-isothermal data in chemically controlled regime. The apparent activation energy was determined to be about 34.2 kcalmol-1 with pre-exponential factor about 108 sec-1 for extent of reaction less than 0.5.

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