Paper PI-4

Thermochemistry of the pseudobinary NaPO₃ – Na₄P₂O₇ system

Urbanik W.¹, Kapała J.², Znamierowska T.¹

¹Department of Inorganic Chemistry, Faculty of Engineering and Economics,

Wrocław University of Economics;

²Department of Chemistry, Institute of Inorganic Chemistry and Metallurgy of Rare Elements,

Wrocław University of Technology;

The thermoanalysis of the system phases has been done. The temperature dependence of C_p has been interpreted. The phase transitions of NaPO₃, Na₄P₂O₇ and Na₅P₃O₁₀ have been compared to the reference data. The measured heat capacities and heat of the phase transition have been used as initial conditions for Calphad modeling of the phase diagram. The resulting diagram has been compared to the empirical one. The thermodynamic properties of the liquid phase have been estimated.

Paper PI-4

Thermochemistry of the pseudobinary NaPO3 – Na4P2O7 system

Urbanik W.1, Kapała J.2, Znamierowska T.1

1 Department of Inorganic Chemistry, Faculty of Engineering and Economics,

Wrocław University of Economics;

2 Department of Chemistry, Institute of Inorganic Chemistry and Metallurgy of Rare Elements,

Wrocław University of Technology;

Thermochemistry of the pseudobinary NaPO₃ – Na₄P₂O₇ system

Urbanik W.¹, Kapała J.², Znamierowska T.¹

¹Department of Inorganic Chemistry, Faculty of Engineering and Economics,

²Department of Chemistry, Institute of Inorganic Chemistry and Metallurgy of Rare Elements,