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Oxidation of alkaline earth sulfides to sulfates: Thermodynamic aspects

Jacob, KT and Iyengar, GNK (1982) Oxidation of alkaline earth sulfides to sulfates: Thermodynamic aspects. In: Metallurgical and Materials Transactions B, 13 (3). pp. 387-390.

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The emf of the galvanic cell, Pt, Ni + NiO/(CaO) ZrO2/MS + MSO4, Ir, Pt, where M is calcium, strontium, or barium, has been measured in the temperature range 850 to 1100 K. From these measurements the Gibbs’ energy changes for the oxidation of sulfides of alkaline earth metals to their respective sulfates have been calculated. The results are compared with available thermodynamic data in the literature. The agreement varies from ±2 kJ for the strontium system to ±20 kJ in the case of barium. Trends in the stabilities of alkaline earth sulfates are discussed in relation to the properties of the cationic species involved.

Item Type: Journal Article
Publication: Metallurgical and Materials Transactions B
Publisher: Springer
Additional Information: Copyright of this article belongs to Springer.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 30 Dec 2009 08:46
Last Modified: 19 Sep 2010 05:42
URI: http://eprints.iisc.ac.in/id/eprint/22531

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