Ouahdi, Noura and Guillemet-Fritsch, Sophie and Demai, Jean-Jacques and Durand, Bernard and Er-Rakho, Lahcen and Moussab, Redouane and Samdi, Azzeddine Investigation of the reactivity of AlCl3 and CoCl2 toward molten alkali-metal nitrates in order to synthesize CoAl2O4. (2005) Materials Letters, 5 (2-3). 334-340. ISSN 0167-577X
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Official URL: http://dx.doi.org/10.1016/j.matlet.2004.10.013
Abstract
Cobalt aluminate CoAl2O4 powder, constituted of nano-sized crystallites, is prepared, involving the reactivity of AlCl3 and CoCl2 with molten alkali-metal nitrates. The reaction at 450 °C for 2 h leads to a mixture of spinel oxide Co3O4 and amorphous γ-Al2O3. It is transformed into the spinel oxide CoAl2O4 by heating at 1000 °C. The powders are mainly characterized by XRD, FTIR, ICP, electron microscopy and diffraction, X-EDS and diffuse reflection. Their properties are compared to those of powders obtained by solid state reactions of a mechanical mixture of chlorides or oxides submitted to the same thermal treatment.
Item Type: | Article |
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Additional Information: | http://www.sciencedirect.com/science/journal/0167577X |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | Other partners > Université Hassan II Casablanca - UH2C (MOROCCO) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) |
Laboratory name: | Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France) - Physico-chimie des Matériaux (Casablanca, Morocco) - Equipe Microstructure et Physico-chimie des Matériaux |
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Deposited On: | 07 May 2008 06:27 |
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