Volume properties of the molten systems MF–K2TaF7 (MF = LiF, NaF and KF)

Assessment of Molten Eutectic LiF-NaF-KF Density through Experimental Determination and Semiempirical Modeling

“…Equation shows the density of the molten salt mixture. The ideal behavior term (ρ id ) comes from the additive nature of the volume as a physical property, whereas ρ ex is the term to account for the deviation from the ideal density behavior. Similar equations to eq were used in the past, where an ideal term was determined directly from volume. ,, Ideal density is calculated as the ratio of average molecular weight to the molar volume of the liquid where MW i is the molecular weight and x i is the molar fraction of component i . The excess behavior of the density of molten salts is defined using the RK expansion .…”

“…Similar equations to eq 2 were used in the past, where an ideal term was determined directly from volume. 35,52,53 Ideal density is calculated as the ratio of average molecular weight to the molar volume of the liquid…”

Densities and Volume Properties of the Melts of the Systems (LiF + NaF)eut + SmF3, (LiF + NaF)eut + GdF3, and (LiF + NaF)eut + NdF3

“…Before comparing the measured data, the following should be stated: on the basis of our previously published experiences, we will compare the values of partial molar volume extracted using method B, as these values seem to be more reliable than those obtained with method A. , The values of the partial molar volume of LnF 3 will be compared and discussed as this quantity provides something that can be considered a characteristic parameter of the investigated system. It seems to be impractical to make comparisons over the whole concentration range of the various systems for several reasons: we consider 12 systems, each of which was measured over a different range of temperatures and concentrations, the density values are very similar, as is their concentration dependence, the concentration dependence of molar volume is also mostly monotonic. …”