[article] 
inIndustrial & engineering chemistry research > Vol. 48 N° 16 (Août 2009) . - pp. 7788–7797

Titre :	Symmetric electrolyte nonrandom two-liquid activity coefficient model
Type de document :	texte imprimé
Auteurs :	Yuhua Song, Auteur ; Chau-Chyun Chen, Auteur
Année de publication :	2009
Article en page(s) :	pp. 7788–7797
Note générale :	Chemical engineering
Langues :	Anglais (eng)
Mots-clés :	Electrolyte nonrandom two-liquid model Reformulated NRTL expression Vapor-liquid equilibrium Liquid-liquid Solid-liquid equilibria
Résumé :	The electrolyte nonrandom two-liquid (eNRTL) model is reformulated as a symmetric activity coefficient model with the reference states chosen to be pure liquids for solvents and pure fused salts for electrolytes. These reference states are consistently used in the local interaction term, represented by a reformulated NRTL expression, and the long-range interaction term, represented by an extended symmetric Pitzer−Debye−Hückel expression. Retaining the local electroneutrality and like-ion repulsion hypotheses, the new symmetric electrolyte NRTL model yields simpler activity coefficient expressions for both molecular and ionic species. The utility of the model is demonstrated with vapor−liquid equilibrium, liquid−liquid equilibrium, and solid−liquid equilibria of several mixed solvent electrolyte systems.
En ligne :	http://pubs.acs.org/doi/abs/10.1021/ie9004578

[article] Symmetric electrolyte nonrandom two-liquid activity coefficient model [texte imprimé] / Yuhua Song, Auteur ; Chau-Chyun Chen, Auteur . - 2009 . - pp. 7788–7797.
Chemical engineering
Langues : Anglais (eng)
in Industrial & engineering chemistry research > Vol. 48 N° 16 (Août 2009) . - pp. 7788–7797

Mots-clés :	Electrolyte nonrandom two-liquid model Reformulated NRTL expression Vapor-liquid equilibrium Liquid-liquid Solid-liquid equilibria
Résumé :	The electrolyte nonrandom two-liquid (eNRTL) model is reformulated as a symmetric activity coefficient model with the reference states chosen to be pure liquids for solvents and pure fused salts for electrolytes. These reference states are consistently used in the local interaction term, represented by a reformulated NRTL expression, and the long-range interaction term, represented by an extended symmetric Pitzer−Debye−Hückel expression. Retaining the local electroneutrality and like-ion repulsion hypotheses, the new symmetric electrolyte NRTL model yields simpler activity coefficient expressions for both molecular and ionic species. The utility of the model is demonstrated with vapor−liquid equilibrium, liquid−liquid equilibrium, and solid−liquid equilibria of several mixed solvent electrolyte systems.
En ligne :	http://pubs.acs.org/doi/abs/10.1021/ie9004578