ABSTRACT

The physico-chemical behaviour of the molten system (LiF (1) + CaF2 (2))eut + LaF3 (3) has been studied and the phase equilibria, density and volume properties, electrical conductivity and surface tension have been selected for investigation. Well established methods for determination of these physico-chemical properties of molten salts have been used: thermal analysis, the Archimedean method of hydrostatic weighing, and the phase shift and maximum bubble pressure methods. A significant change in all investigated properties was detected in the region of x3 = 0.04 0.06. As regards phase equilibria this region is close to, and may contain, the eutectic point; in volumetric properties the initial volume contraction (on increasing mol %) starts to reverse; a sharp change of electrical conductivity reflects the changes in ionic composition; and surface tension also shows different behaviour below and above this region.

Compounds

#	Formula	Name
1	FLi	lithium fluoride
2	CaF2	calcium fluoride
3	F3La	lanthanum trifluoride

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	1 2 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Buoyancy - hydrostatic balance	2301
POMD	1 2 3	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	407
POMD	1 2 3	Surface tension liquid-gas, N/m ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid Mole fraction - 2; Liquid		Liquid Air at 1 atmosphere	Maximal bubble pressure	20
POMD	1 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Mole fraction - 1; Liquid Pressure, kPa; Liquid	Liquid	Buoyancy - hydrostatic balance	315
POMD	1 2	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Mole fraction - 1; Liquid Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	62
POMD	1 2	Surface tension liquid-gas, N/m ; Liquid	Temperature, K; Liquid	Mole fraction - 1; Liquid	Liquid Air at 1 atmosphere	Maximal bubble pressure	5

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Physico-chemical Properties of the (LiF + CaF2)eut + LaF3 System: Phase Equilibria, Volume Properties, Electrical Conductivity and Surface Tension

Kubikova, B.[Blanka], Boca, M.[Miroslav], Mlynarikova, J.[Jarmila], Gurisova, V.[Veronika], Simurda, M.[Michal], Netriova, Z.[Zuzana], Korenko, M.[Michal]

ABSTRACT