Kinetics of thermal decomposition of barium zirconyl oxalate

Gangadevi, T and Rao, M Subba and Kutty, TR Narayan (1986) Kinetics of thermal decomposition of barium zirconyl oxalate. In: Monatshefte für Chemie, 117 (1). pp. 21-32.

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Abstract

Kinetics of the thermal decomposition of anhydrous barium zirconyl oxalate and a carbonate intermediate have been studied. Decomposition of the anhydrous oxalate, though it could be explained based on a contracting-cube model, is quite complex. Kinetics of decomposition of the intermediate carbonate Ba2Zr2O5CO3 is greatly influenced by thermal effects during its formation. (agr-t) curves are sigmoidal and obey a power law equation followed by first order decay. Presence of carbon in the vacuum-prepared carbonate has a strong deactivating effect. Decomposition of the carbonate is accompanied by growth in particle size of the product barium zirconate.

Item Type:	Journal Article
Additional Information:	Copyright of this article belongs to Springer.
Keywords:	Thermal decomposition;Kinetics;Barium zirconyl oxalate.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	04 Sep 2009 03:04
Last Modified:	19 Sep 2010 05:43
URI:	http://eprints.iisc.ernet.in/id/eprint/22786

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