Isothermal phase (vapour plus liquid) equilibrium data for binary mixtures of propene (R1270) with either 1,1,2,3,3,3-hexafluoro-1-propene (R1216) or 2,2,3-trifluoro-3-(trifluoromethyl)oxirane in the temperature range of (279 to 318) K

Shalendra Clinton Subramoney, Wayne Michael Nelson*, Xavier Courtial, Paramespri Naidoo, Christophe Coquelet, Dominique Richon, Deresh Ramjugernath

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)


Isothermal (vapour + liquid) equilibrium data (P-x-y) are presented for the 1-propene 1,1,2,3,3,3-hexafluoro-1-propene and the 1-propene + 2,2,3-trifluoro-3-(trifluoromethyl) oxirane binary systems. Both binary systems were studied at five temperatures, ranging from (279.36 to 318.09) K, at pressures up to 2 MPa. The experimental (vapour + liquid) equilibrium data were measured using an apparatus based on the "(static + analytic)'' method incorporating a single movable Rapid On-Line Sampler-Injector to sample the liquid and vapour phases at equilibrium. The expanded uncertainties are approximated on average as T = 0.07 K, 0.008 MPa, and 0.007 and 0.009 for the temperature, pressure, and the liquid and vapour mole fractions, respectively. A homogenous maximum-pressure azeotrope was observed for both binary systems at all temperatures studied. The experimental data were correlated with the Peng-Robinson equation of state using the Mathias-Copeman alpha function, paired with the Wong-Sandler mixing rule and the Non-Random Two Liquid activity coefficient model. The model provided satisfactory representation of the phase equilibrium data measured. (C) 2015 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)100-105
Number of pages6
JournalJournal of Chemical Thermodynamics
Publication statusPublished - Nov 2015
MoE publication typeA1 Journal article-refereed


  • VLE
  • Hexafluoropropene
  • (Static plus analytic)
  • ROLSI (TM)
  • MPA

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