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Numéro
J. Phys. IV France
Volume 11, Numéro PR10, Décembre 2001
Journées d'Étude des Équilibres entre Phases
Page(s) Pr10-99 - Pr10-102
DOI https://doi.org/10.1051/jp4:20011013
Journées d'Étude des Équilibres entre Phases

J. Phys. IV France 11 (2001) Pr10-99-Pr10-102

DOI: 10.1051/jp4:20011013

The Ca0.80CuO1.93 phase : New way of synthesis by the sol-gel method

S. Phok1, T.K. Jondo2, Ph. Galez1 and J.L. Jorda1

1  LAIMAM, Université de Savoie, 9 rue de l'Arc-en-Ciel, BP. 240, 74942 Annecy-le-Vieux cedex, France
2  Université du Bénin, BP. 418, Lomé, Togo


Abstract
We report on the reaction kinetics for the Ca0.80CuO1.93 phase prepared by the sol-gel method using acrylamide for gelification. The phase was prepared 95% pure after a 2 hour treatment at 800°C. Comparative stability under vacuum and oxygen has been determined. The kinetics parameters for the decomposition have been established : the activation energy is Ea= 626 kJ/mol and the pseudo reaction order n = 0.5.



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