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Weighted-power-mean mixture model for the gibbs energy of fluid mixtures / Walter W. Focke in Industrial & engineering chemistry research, Vol. 48 N° 11 (Juin 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 11 (Juin 2009) . - pp. 5537–5541 Titre : Weighted-power-mean mixture model for the gibbs energy of fluid mixtures Type de document : texte imprimé Auteurs : Walter W. Focke, Auteur Année de publication : 2009 Article en page(s) : pp. 5537–5541 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Gibbs  energy  Cubic  equations  of  state Résumé : A continuous family of excess Gibbs free energy expressions is derived based on the double-weighted power mean mixture model and concepts from cubic equations of state. This family has two types of parameters: The model form is determined by two power indices, whereas the matrix of binary coefficients characterizes pure component behavior and binary interactions. It is shown that the Porter, Margules, and Wassiljewa composition dependence are but special forms of this more general expression. In particular, the Wassiljewa Gibbs free energy form turns out to have the same composition dependence as the nonrandom two-liquid (NRTL) equation. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900083h [article] Weighted-power-mean mixture model for the gibbs energy of fluid mixtures [texte imprimé] / Walter W. Focke, Auteur . - 2009 . - pp. 5537–5541. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 11 (Juin 2009) . - pp. 5537–5541 Mots-clés : Gibbs  energy  Cubic  equations  of  state Résumé : A continuous family of excess Gibbs free energy expressions is derived based on the double-weighted power mean mixture model and concepts from cubic equations of state. This family has two types of parameters: The model form is determined by two power indices, whereas the matrix of binary coefficients characterizes pure component behavior and binary interactions. It is shown that the Porter, Margules, and Wassiljewa composition dependence are but special forms of this more general expression. In particular, the Wassiljewa Gibbs free energy form turns out to have the same composition dependence as the nonrandom two-liquid (NRTL) equation. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900083h