Modeling the high-pressure behavior of binary mixtures of carbon dioxide+alkanols using an excess free energy mixing rule

M. Castier, L. A. Galicia-Luna, S. I. Sandler

Resultado de la investigación: Contribución a una revistaArtículo

2 Citas (Scopus)

Resumen

The behavior of binary mixtures of carbon dioxide+alkanol (1-butanol, 2-butanol, 1-pentanol, or 2-pentanol) at high pressures was modeled using the Stryjek-Vera version of the Peng-Robinson equation of state. Two mixing rules were compared for this purpose: the classical one-fluid van der Waals and the Wong-Sandler mixing rules. In the case of the latter mixing rule, the NRTL model for the excess Gibbs free energy was used. We observed that both mixing rules can reproduce the qualitative aspects of the critical diagrams of these binary mixtures. A comparison of the results shows that there is no clear superiority of one mixing rule over the other in terms of the ability to predict the critical behavior of these mixtures.
Idioma originalInglés estadounidense
Páginas (desde-hasta)659-666
Número de páginas8
PublicaciónBrazilian Journal of Chemical Engineering
DOI
EstadoPublicada - 1 ene 2004

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