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Thermodynamic Study of the Solid-Liquid Equilibria in the Systems MIPO3-Pr(PO3)3 (MI=Na, Rb, Cs OR Ag)

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Abstract

A previously established equation of a stoichiometric phase liquidus curve was applied to determination of the phase diagrams of the systems MIPO3-Pr(PO3)3 (with MI=Na, Rb, Cs or Ag).

The temperature, enthalpy and entropy of fusion were calculated for each solid phase with the exception of silver polyphosphate, the crystallization field of which was very limited.

The enthalpy of fusion of the polyphosphate Pr(PO3)3 was determined from the DTA curve.

The melting enthalpy of Pr(PO3)3 calculated from the different binary systems was approximately equal to the measured value. The calculated temperatures and compositions were in good agreement with those determined experimentally.

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Authors and Affiliations

  1. Laboratoire de Physico-Chimie Minérale, Faculté des Sciences de Bizerte, 7021-, Zarzouna-Bizerte, Tunisia

    Dalila Ben Hassen-Chehimi & Malika Trabelsi-Ayedi

  2. Laboratoire de Physico-Chimie des Interfaces et des Matériaux, Institut National de Recherche Scientifique et Technique, B. P. 95, Hammam-Lif, 2050, Tunisia

    Najia Kbir-Ariguib

Authors
  1. Dalila Ben Hassen-Chehimi
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  2. Najia Kbir-Ariguib
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  3. Malika Trabelsi-Ayedi
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Hassen-Chehimi, D.B., Kbir-Ariguib, N. & Trabelsi-Ayedi, M. Thermodynamic Study of the Solid-Liquid Equilibria in the Systems MIPO3-Pr(PO3)3 (MI=Na, Rb, Cs OR Ag). Journal of Thermal Analysis and Calorimetry 53, 871–882 (1998). https://doi.org/10.1023/A:1010194518883

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  • DOI: https://doi.org/10.1023/A:1010194518883

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