Phase equilibria in the systems 1-hexene + heptane and 1-hexene + ethyl 1,1-dimethylethyl ether + heptane at 94.00 kPa

Hugo Segura, Jaime Wisniak, Graciela Galindo, Ricardo Reich

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Consistent vapor-liquid equilibrium data at 94.00 kPa have been determined for the ternary system 1-hexene + ethyl 1,1-dimethylethyl ether + heptane and for its constituent binary 1-hexene + heptane, in the temperature range 334 to 369 K. According to the experimental results the ternary system 1-hexene + ethyl 1,1-dimethylethyl ether + heptane exhibits moderate positive deviations from ideal behavior. The binary system 1-hexene + heptane exhibits slight negative deviations from ideal behavior. None of the systems present an azeotrope. The vapor liquid equilibrium data have been correlated with the mole fraction using the Redlich-Kister, Wilson, NRTL, UNIQUAC, and Tamir relations. These models, in addition to UNIFAC, allow good prediction of the VLE properties of the ternary system from those of the pertinent binary systems.

Original languageEnglish
Pages (from-to)67-81
Number of pages15
JournalPhysics and Chemistry of Liquids
Volume40
Issue number1
DOIs
StatePublished - 1 Jan 2002

Keywords

  • ETBE
  • Ether
  • Fuel oxygenating additive
  • Unleaded gasoline
  • Vapor-liquid equilibrium

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