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  • 1 Faculté des Sciences de Bizerte Laboratoire de Physico-Chimie Minérale 7021 Zarzouna-Bizerte Tunisie 7021 Zarzouna-Bizerte Tunisie
  • 2 Institut National de Recherche Scientifique et Technique Laboratoire des Procédés Chimiques B.P. 95 Hammam-Lif 2050 Tunisie B.P. 95 Hammam-Lif 2050 Tunisie
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The preparation of a new acid lanthanide diphosphate is reported. The acid praseodymium diphosphate, obtained as a trihydrate salt, is investigated by chemical analysis, X-ray powder diffraction and IR spectroscopy. The study of the thermal behavior of HPrP2O7·3H2O shows that its dehydration begins at 367 K. A scheme of its decomposition is proposed.