Thermodynamic Properties Determination in LiF-CaF2 Using Electrochemistry in High Temperature Fused Salts: Application to CeF3.

Combining thermodynamic database and electrochemical measurements, CeF₃ thermodynamics properties were determined between 1113 K and 1233 K in LiF-CaF₂ solution. First, standard potentials of CeF₃/Ce were calculated in different reference states: liquid and solid, and infinite dilution. Then activity coefficients of CeF₃ were estimated in the different reference states and for different composition scales: molarity, molality and molar fraction. Finally, constants which interconnected the infinite dilution reference state and the solid and liquid reference states were evaluated. [ABSTRACT FROM AUTHOR]