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Reactivity and catalytic activity of layered YBA2CU3O7-delta (123) type defect perovskites

Hegde, MS and Ramesh, S (1994) Reactivity and catalytic activity of layered YBA2CU3O7-delta (123) type defect perovskites. In: Proceedings of the Indian Academy of Sciences - Chemical Sciences, 106 (6). 1363-1373 .

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Abstract

The chemical modifications of structure, reactivity and catalytic properties of layered triple perovskite oxides, related to the YBa2Cu3O7-delta (123) system, have been briefly reviewed. These oxides form a versatile family of materials with wide-ranging chemical and physical properties. The multiple sites available for chemical doping, and the ability to reversibly intercalate oxygen at the defect sites have rendered these oxides important model systems in the area of oxide catalysis. An attempt has been made to comprehend the hitherto known catalytic reactions and correlate them to various factors like structure, oxygen diffusional limitations, different geometries adopted by various substituents, oxidative non-stoichiometry and activation energy for oxygen desorption. In particular, results on the enhanced catalytic activity of cobalt-substituted 123 oxide systems towards the selective catalytic oxidation of ammonia to nitric oxide and carbon monoxide to carbon dioxide are presented.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian academy of sciences.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 13 Apr 2011 11:53
Last Modified: 13 Apr 2011 11:53
URI: http://eprints.iisc.ernet.in/id/eprint/36782

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