Experimental vapor-liquid equilibria for the systems {2-ethyl-1-hexanol + glycerol + CO2} and {2-methyl-2-propanol + glycerol + CO2}

M. O. Ferreira, L. Ferreira-Pinto, E. M B D Souza, M. Castier, F. A P Voll, V. F. Cabral, L. Cardozo-Filho

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This work presents new phase equilibrium data of {CO2 + 2-ethyl-1-hexanol} and {CO2 + 2-methyl-2-propanol} systems with or without glycerol. The static synthetic method using a variable-volume view cell was utilized to measure vapor-liquid equilibrium saturation points at temperatures from 343 K to 393 K and at pressures up to 20 MPa. The phase transition pressure measurements were carried out by injecting a known amount of carbon dioxide into a mixture of [0.0087 glycerol + 0.9913 (2-ethyl-1-hexanol or 2-methyl-2-propanol)]. This amount of added glycerol did not significantly affect vapor-liquid transition pressures, compared to binary systems without glycerol. The Peng-Robinson equation of state was used to correlate the experimental phase equilibrium data.

Original languageEnglish
Pages (from-to)2506-2512
Number of pages7
JournalJournal of Chemical and Engineering Data
Issue number9
Publication statusPublished - 12 Sep 2013


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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