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Advances in Materials Science and Engineering
Volume 2009, Article ID 612130, 4 pages
http://dx.doi.org/10.1155/2009/612130
Research Article

Temperature Dependent Electrical Properties and Catalytic Activities of Phase System

1Institut Matériaux Microélectronique & Nanosciences de Provence, IM2NP, UMR CNRS 6242, Université du Sud Toulon-Var, BP 20132, 83957 La Garde Cedex, France
2Laboratoire Matériaux et Environnement Faculté des Sciences, Université Ibn Zohr, P.O. Box 8106, 80000 Agadir, Morocco

Received 10 July 2009; Accepted 20 September 2009

Academic Editor: Steven Suib

Copyright © 2009 Bahcine Bakiz et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present a study of electrical properties and catalytic activities of materials belonging to the hydrated carbonated system . The polycrystalline hydroxycarbonate, dioxycarbonate, and oxide are prepared via a coprecipitation route followed by heat treatment. The electrical conduction of the phases obtained by thermal decomposition from , is analyzed by electrical impedance spectroscopy, from to , under air. The catalytic properties of , and polycrystalline phases are studied by FTIR spectroscopy, in presence of gas mixtures CO-air and -air, at temperatures ranging between to . The three materials behave differently in presence of CO or gases.