Phase equilibria in the ternary system methyl 1,1-dimethylethyl ether + oxolane + heptane

Jaime Wisniak, Gabriela Embon, Ran Shafir

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Abstract

Vapor-liquid equilibrium at 94 kPa has been determined for the ternary system methyl 1,1-dimethylethyl ether (MTBE) + oxolane + heptane. The system deviates positively from ideality and no azeotrope is present The ternary activity coefficients and the boiling points of the system have been correlated with the composition using the Redlich-Kister, Wilson, NRTL, UNIQUAC, UNIFAC, and Wisniak-Tamir relations. Most of the models allow a good prediction of the activity coefficients of the ternary system from those of the pertinent binary systems.

Original languageEnglish
Pages (from-to)37-51
Number of pages15
JournalPhysics and Chemistry of Liquids
Volume36
Issue number1
DOIs
StatePublished - 1 Jan 1998

Keywords

  • Activity coefficients
  • Ternary systems
  • Vapor-liquid equilibrium

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