model-fitting approach to kinetic analysis of non-isothermal oxidation of molybdenite

Authors

reza ebrahimi kahrizsangi

mohammad hasan abbasi

ali saidi

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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Journal title:
iranian journal of chemistry and chemical engineering (ijcce)

Publisher: iranian institute of research and development in chemical industries (irdci)-acecr

ISSN 1021-9986

volume 26

issue 2 2007

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