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Kinetic analyses using simultaneous TG/DSC measurements
Authors:J. P. Sanders  P. K. Gallagher
Affiliation:(1) The National Brick Research Center, Clemson University, 100 Clemson Research Blvd., Anderson, SC 20625;(2) Adjunct Prof., Clemson Univ. - Emeritus Prof. The Ohio State Univ., USA
Abstract:Summary The thermal decomposition of CaCO3was studied using simultaneous TG/DSC for two different ranges of particle size from the same source and a physical mixture of each. The difference in kinetic behavior was as expected qualitatively, but significantly different quantitatively. In addition, the mixture did not behave as a simple combination of its end members. These discrepancies are attributed to the problems associated with mass and thermal transport. The TG data again proved easier to fit than the DSC data.
Keywords:TG  thermal decomposition  DSC  activation energy  calcium carbonate  Arrhenius kinetic parameters  particle size
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