The Guggenheim-Huggins-Miller (GHM) combinatorial factor is modified by introducing a factor in the pair probability of a hole-hole pair. The proposed contribution is combined with the expanded quasi-chemical contribution and tested against saturated vapor pressure and liquid density. The proposed model correlates experimental saturated liquid density better than a quasi-chemical nonrandom lattice fluid (QLF) model based on original GHM combinatorial factor. The optimized parameters show a quite different behavior compared with that of the QLF model and the relationships between the parameters of two models are discussed.
Kleinrahm R, Wagner W, J. Chem. Thermodyn., 18, 739, 1986
Smith BD, Srivastava R, Thermodynamic data for pure compounds, Elsevier, Distributors for the U.S. and Canada, Elsevier Science Pub. Co. (1986)
Perry RH, Green DW, Maloney JO, Perry’s Chemical Engineers’ Handbook, McGraw-Hill (1997)
Daubert TE, Danner RP, Design Institute for Physical Property Data (U.S.), Physical and thermodynamic properties of pure chemicals: Data compilation, Hemisphere Pub. Corp., (1989)