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Vapor-liquid equilibrium measurements and modeling for the ethane (R-170) + 1,1,2,3,3,3-hexafluoro-1-propene (R-1216) binary system

Abstract : Novel isothermal (p-x-y) vapor-liquid equilibrium data are reported for ethane (R-170) + 1,1,2,3,3,3-hexafluoro-1-propene (R-1216) mixtures at five temperatures in the (282.93 to 322.89) K range, at pressures up to about 4.6 MPa. The experimental data were measured using an apparatus based on the "static-analytic" method taking advantage of two electromagnetic capillary samplers for repeatable and reliable equilibrium phase sampling and handling. The experimental data are well-correlated with the "PR-MC-NRTL-WS" model constituted by the Mathias-Copeman α function, nonrandom two-liquid (NRTL) local composition model, and Wong-Sandler mixing rule introduced in the Peng-Robinson equation of state. The studied system did not exhibit azeotropic behavior nor liquid-liquid immiscibility over the range of investigated temperatures. Mixture critical points have been estimated from the experimental vapor-liquid equilibrium data via the extended scaling laws and the "PR-MC-NRTL-WS" model and are found to be in good agreement with the experimental isothermal phase envelopes.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00796637
Contributor : Jordane Raisin-Dadre <>
Submitted on : Monday, March 4, 2013 - 4:09:28 PM
Last modification on : Friday, April 9, 2021 - 12:02:04 PM

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Shalendra C. Subramoney, Alain Valtz, Christophe Coquelet, Dominique Richon, Paramespri Naidoo, et al.. Vapor-liquid equilibrium measurements and modeling for the ethane (R-170) + 1,1,2,3,3,3-hexafluoro-1-propene (R-1216) binary system. Journal of Chemical and Engineering Data, American Chemical Society, 2012, 57 (11), pp.2947-2955. ⟨10.1021/je300431n⟩. ⟨hal-00796637⟩

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