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Synthesis of CoAl2O4 by double decomposition reaction between LiAlO2 and molten KCoCl3

Ouahdi, Noura and Guillemet-Fritsch, Sophie and Durand, Bernard and El Ouatib, Rachida and Er Rakho, Lahcen and Moussa, R. and Samdi, Azzeddine Synthesis of CoAl2O4 by double decomposition reaction between LiAlO2 and molten KCoCl3. (2008) Journal of the European Ceramic Society, vol. 28 (n° 10). 1987-1994 . ISSN 0955-2219

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Official URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2007.12.035

Abstract

Submicronic CoAl2O4 powders were prepared by double decomposition reaction between solid LiAlO2 and molten KCoCl3 at 500 ◦C for 24 h. The reaction mechanism involves the dissolution of LiAlO2 shifted by the precipitation of CoAl2O4 until complete transformation and the reaction leads to powders with a very homogeneous chemical composition. The powders obtained were mainly characterized by XRD, FTIR, ICP, X.EDS, electron microscopy and diffraction and diffuse reflexion. The blue pigments obtained exhibit a high thermic stability allowing their use for the colouring of ceramic tiles.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of the European Ceramic Society : http://www.sciencedirect.com/science/journal/09552219
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 - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Nihad Lahdifi
Deposited On:18 May 2010 14:56

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