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

摘要

The kinetics of molybdenite oxidation was studied by non-isothermal TGA-DTA with heating rate 5 慢.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 10~8 sec~(-1) for extent of reaction less than 0.5.