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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, 28 (10). 1987-1994 . ISSN 0955-2219

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


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 - 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:
Deposited On:18 May 2010 14:56

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