Calculation of Interaction Parameters from Immiscible Phase Diagram of Alkali Metal or alkali Earth Metal-Halide System by Means of Subregular solution Model

摘要

In this paper, the interaction parameters in the subregular solution model, λ_1 and λ_2, are regarded as a linear function of temperature, T. Therefore, the molar excess Gibbs energy of A-B binary system may be reexpressed as follows: G~E_m = x_A x_B [(λ_11 + λ_12T) + (λ_21 + λ_22T)x_B] The calculation of the model parameters, λ_11, λ_12, λ_21 and λ_22, was carried out numerically From the phase diagrams for 11 alkali metal-alkali halide or alkali earth metal-halide systems.