Isothermal vapor-liquid equilibria for the binary system of carbon dioxide (CO2) + 1,1,1,2,3,3,3-Heptafluoropropane (R-227ea)

Seol A. Kim, Jong Sung Lim, Jeong Won Kang

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Isothermal vapor-liquid equilibrium (VLE) data for the binary mixture of carbon dioxide (CO2) + 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) were measured at six evenly spaced temperatures of (278.15, 288.15, 298.15, 308.15, 318.15, and 328.15) K. The data in the two-phase region were measured by using a circulation-type equilibrium apparatus in which both vapor and liquid phases are continuously recirculated. The experimental data were correlated with the Peng-Robinson equation of state (PR-EoS) using the Wong-Sandler (W-S) mixing rules combined with the nonrandom two-liquid (NRTL) excess Gibbs free energy model. The calculated values with the PR-EoS using the W-S mixing rules show good agreement with the experimental data.

Original languageEnglish
Pages (from-to)4999-5003
Number of pages5
JournalJournal of Chemical and Engineering Data
Issue number11
Publication statusPublished - 2010 Nov 11


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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