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Non‐Isothermal Decomposition Kinetics of Alkaline Earth Metal Carbonates
Author(s) -
Maitra S.,
Bandyopadhyay N.,
Das S.,
Pal A. J.,
Pramanik J.
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01607.x
Subject(s) - decomposition , kinetics , activation energy , alkaline earth metal , isothermal process , chemistry , thermal decomposition , diffusion , chemical kinetics , kinetic energy , thermodynamics , metal , inorganic chemistry , mineralogy , organic chemistry , physics , quantum mechanics
The kinetics of thermal decomposition of four synthetic alkaline earth metal carbonates (MgCO 3 , CaCO 3 , SrCO 3 , and BaCO 3 ) was studied under non‐isothermal conditions using thermo‐gravimetry. The activation energy and the pre‐exponential factor for the decomposition reactions were determined using the Agarwal and Sivasubramanium integral approximation method. A new method was developed using a Turbo‐C‐based computer program to evaluate the integral of the kinetic equation. It was observed that the decomposition reaction of MgCO 3 and CaCO 3 followed two‐dimensional diffusion‐controlled kinetics and the decomposition reaction of SrCO 3 and BaCO 3 followed a Ginstling–Brounshtein model‐based diffusion‐controlled kinetics.