Estimation of interfacial behavior using the global phase diagram approach: I. Carbon dioxide-n-alkanes

Andres Mejía, Ilya Polishuk, Hugo Segura, Jaime Wisniak

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

This study looks for the first time at the possibility of predicting the interfacial tension in mixtures without preliminary resource to their experimental data. For this purpose the quantitative global phase diagram (klGPD)-based approach (GPDA), which needs only two or three key experimental points of one homologue for predicting the complete phase behavior in whole homologues series of binary systems, is combined with the gradient theory (GT) methodology. The resulting model is able to predict the data in satisfactory manner, although the increasing asymmetry between the compounds of the mixture probably affects the ability of GPDA to yield accurate predictions of phase equilibria and interface tension simultaneously.

Original languageEnglish
Pages (from-to)171-176
Number of pages6
JournalThermochimica Acta
Volume411
Issue number2
DOIs
StatePublished - 5 Mar 2004

Keywords

  • Carbon dioxide
  • Equation of state
  • Parameter optimization
  • Predictive model
  • Surface tension
  • n-Alkanes

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