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Analytical model for excess Gibbs energy of nonspecific liquid metal interactions
Author(s) -
Cox K. R.,
Eckert C. A.
Publication year - 1984
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690300120
Subject(s) - chemistry , gibbs free energy , thermodynamics , eutectic system , ion , solvation , kinetic energy , liquid metal , electron , ionic liquid , vapor pressure , intermolecular force , physics , organic chemistry , alloy , quantum mechanics , catalysis , molecule
A physical model for the very strong intermolecular forces in liquid metal mixtures is proposed, involving the combined effects of ion‐ion, ion‐electron, and electron‐electron interactions plus the charge density effects on the electron kinetic energy. The resulting excess Gibbs energy expression contains a single cross‐energy parameter which must be evaluated either from the eutectic point or from one mixture datum. The applicability of the model is limited to systems without strong specific solvation, but it does effectively predict both negative and positive deviations from Raoult's law, including the asymmetry arising from size differences. Applications are shown for vapor‐liquid, liquid‐liquid and solid‐liquid equilibria.