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

The kinetics of molybdenite oxidation was studied by non-isothermal TGA-DTA with heating rate ۵ ºC.min-۱.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 ۳۴.۲ kcalmol-۱ with pre-exponential factor about ۱۰۸ sec-۱ for extent of reaction less than ۰.۵.

کلیدواژه ها:

Kinetics ، Molybdenite ، Non-isothermal ، Model-fitting ، TGA ، DTA