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Issue J. Phys. IV France
Volume 11, Number PR10, Décembre 2001
Journées d'Étude des Équilibres entre Phases
Page(s) Pr10-201 - Pr10-205
DOI http://dx.doi.org/10.1051/jp4:20011031

Journées d'Étude des Équilibres entre Phases

J. Phys. IV France 11 (2001) Pr10-201-Pr10-205
DOI: 10.1051/jp4:20011031

Contribution à l'étude du système ternaire H2O-(NH4)3Al(C2O4)3-(NH4)2MO2O5(C2O4)2. L'isotherme 25 °C

M. Ezahri1, G. Coffy2, B.F. Mentzen2 and M. El Hadek1

1  Laboratoire de Chimie Minérale Appliquée et Génie des Procédés, Université Ibn Zohr, Faculté des Sciences, BP. 28/S, Agadir, Morocco
2  Laboratoire de Physicochimie Minérale, URA 116 du CNRS, 43 boulevard du 11 novembre 1918, 69622 Villeurbanne cedex, France


Abstract
The H2O-(NH4)2Mo2O5(C2O4)2 binary system has been investigated in the -20 to 75°C temperature range. An incongruently melting dihydrate is observed. The solubility curves at 25°C for H2O-(NH4)3Al(C2O4)3-(NH4)2Mo2O5(C2O4)2 system have been established using conductivity and analytical techniques. In the temary diagram the liquidus curve exhibits two branches corresponding to the saturation in (NH4)3Al(C2O4)3, 3H2O and (NH4)2Mo2O5(C2O4)2, 2H2O.



© EDP Sciences 2001

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