Phase equilibria in the ternary system hexane + ethyl 1,1-dimethylethyl ether + heptane

Ricardo Reich, Marcela Cartes, Jaime Wisniak, Hugo Segura

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Consistent vapor-liquid equilibrium data at 94 kPa have been determined for the ternary system hexane + ethyl 1,1-dimethylethyl ether + heptane. The results indicate that the system deviates positively from ideality and that no azeotrope is present. The ternary system were predicted with the composition by the Redlich-Kister, Wilson, NRTL, UNIQUAC and UNIFAC models using only the parameters of the constituent binaries. Most of the models allow a very good prediction of the phase equilibrium of the ternary system. In addition, the Wisniak-Tamir relations were used for correlating bubble- point temperatures.

Original languageEnglish
Pages (from-to)99-108
Number of pages10
JournalFluid Phase Equilibria
Volume154
Issue number1
DOIs
StatePublished - 4 Jan 1999

Keywords

  • ETBE
  • Ethers
  • Fuel oxygenating additives
  • Unleaded gasoline
  • Vapor-liquid equilibrium

ASJC Scopus subject areas

  • Chemical Engineering (all)
  • Physics and Astronomy (all)
  • Physical and Theoretical Chemistry

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