Isobaric vapor-liquid equilibria and densities for the system methyl 1,1-dimethylethyl ether + 2-propanol

Hugo Segura, Graciela Galindo, Ricardo Reich, Jaime Wisniak, Sonia Loras

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14 Scopus citations

Abstract

Vapor-liquid equilibrium data at 50, 75 and 94 kPa have been determined for the binary system methyl 1,1-dimethylethyl ether +2-propanol, in the temperature range 308-344 K. The measurements were made in an equilibrium still with circulation of both the vapor and liquid phases. Excess volumes have been also determined from density measurements using a vibrating tube densimeter at 298.15 K. The system exhibits positive deviation from ideal behavior and does not present azeotropy within the range of pressures studied. The excess volume of the system is negative over the whole mole fraction range. The activity coefficients and boiling points of the solutions were well correlated with the mole fraction by the Wohl, Wilson, UNIQUAC, and NRTL equations. Excess volume data were correlated using the Redlich-Kister expansion.

Original languageEnglish
Pages (from-to)277-294
Number of pages18
JournalPhysics and Chemistry of Liquids
Volume40
Issue number3
DOIs
StatePublished - 1 Jun 2002

Keywords

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

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