Abstract:
hermogravimetric (TG) analysis and differential thermogravimetric analysis (DTG) are the most
commonly used analytical techniques to find the kinetic triplet of solid state reactions. There are number
of methods proposed in the literature for extracting kinetic parameters of solid state reactions from
TG & DTG thermograms. MATLAB based computer simulation was used to investigate the dependence of
DTG peak position on kinetic triplets. The numerical modelling shows that there is no significant variation
in DTG peak position with the reaction model. Therefore, peak position is not a suitable parameter when
determining reaction model. However, this enables a development of a common equation to link the
activation energy and the pre-exponential factor. This relationship in turn be used to enhance the accuracy
of kinetic parameters obtained.
