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Isothermal Vapor–Liquid Equilibrium Data for the Hexafluoroethane (R116) + n-Butane System at Temperatures from 273 to 323 K

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Thermodynamics Research Unit, School of Engineering, University of KwaZulu-Natal, Howard College Campus, Durban, 4001, South Africa
Mines ParisTech, PSL Research University, CTP−Centre of Thermodynamics of Processes, 35 rue Saint Honoré, 77305 Fontainebleau Cedex, France
*E-mail: [email protected]. Tel.: +27 31 260 2938. Fax: +27 31 260 1118.
Cite this: J. Chem. Eng. Data 2017, 62, 10, 3483–3487
Publication Date (Web):August 31, 2017
https://doi.org/10.1021/acs.jced.7b00485
Copyright © 2017 American Chemical Society

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    Abstract

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    Isothermal vapor–liquid equilibrium (VLE) data for the system of hexafluoroethane (R-116) + n-butane are reported in this paper. The measurements were undertaken at six different temperatures ranging from 273.27 to 323.19 K, with pressure ranging from 0.104 to 3.742 MPa. Two of the temperature sets were measured below, and the remaining four were measured above, the critical temperature of R116. The measurements were performed in a “static-analytic” type VLE apparatus. The sampling of the equilibrium phases was performed via pneumatic ROLSI capillary samplers (Armine’s patent). The equipment was developed in the CEP/TEP laboratory at MINES ParisTech. Combined expanded uncertainties in the measurements were estimated to be 0.02 K for temperature, 0.0006 MPa for pressure, and maximum of 0.004 for composition, based on the NIST guidelines. Each set of isothermal vapor–liquid equilibrium data was correlated with the Peng–Robinson equation of state (PR-EOS). The Mathias–Copeman alpha function, and the Wong–Sandler mixing rule, utilizing the nonrandom two-liquid activity coefficient model, were incorporated into this equation of state.

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    Cited By

    This article is cited by 5 publications.

    1. Mark D. Williams-Wynn, Paramespri Naidoo, Deresh Ramjugernath. Isothermal Bubble Pressure Data for the Binary System of C2F6 and n-Octane. Journal of Chemical & Engineering Data 2018, 63 (12) , 4795-4800. https://doi.org/10.1021/acs.jced.8b00825
    2. Mark D. Williams-Wynn, Francisco Adrián Sánchez, Paramespri Naidoo, Selva Pereda, Deresh Ramjugernath. Modeling of Trifluoromethane (R-23) or Hexafluoroethane (R-116) and Alkane Binary Mixtures using the Group-Contribution with Association Equation of State. Industrial & Engineering Chemistry Research 2018, 57 (31) , 10640-10648. https://doi.org/10.1021/acs.iecr.8b01933
    3. Deresh Ramjugernath, Alain Valtz, Dominique Richon, Mark D. Williams-Wynn, Christophe Coquelet. Isothermal Vapor–Liquid Equilibrium Data for Binary Mixtures of Hexafluoroethane (R116) + n-Pentane or n-Hexane at Two Temperatures, 288 and 296 K. Journal of Chemical & Engineering Data 2018, 63 (5) , 1228-1233. https://doi.org/10.1021/acs.jced.7b00836
    4. Zoubeyr Mimoune, Imad Anoune, Hakim Madani. Implementation of PC-SAFT for Predicting thermodynamic properties of pure refrigerants and vapor-liquid equilibria of refrigerants binary mixtures.. Fluid Phase Equilibria 2023, 573 , 113868. https://doi.org/10.1016/j.fluid.2023.113868
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