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High-Pressure Vapor−Liquid Equilibrium Data for (Carbon Dioxide + Cyclopentanol) and (Propane + Cyclopentanol)

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Thermodynamics Research Unit, School of Chemical Engineering, University of Kwa-Zulu Natal, Howard College Campus, King George V Avenue, Durban, 4041, South Africa
* Corresponding author. Tel.: +27 31 2603128. E-mail: [email protected]
Cite this: J. Chem. Eng. Data 2010, 55, 1, 196–200
Publication Date (Web):August 19, 2009
https://doi.org/10.1021/je900305m
Copyright © 2009 American Chemical Society

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    Abstract

    Isothermal vapor−liquid equilibrium (VLE) data are presented for (carbon dioxide + cyclopentanol) and (propane + cyclopentanol). Measurements were undertaken using a static analytic high-pressure cell at three temperatures ranging from (353.15 to 393.15) K for (propane + cyclopentanol) and at two temperatures (373.15 and 403.15) K for (carbon dioxide + cyclopentanol). The uncertainties in the measurements of temperature and pressure are ± 0.2 K and ± 0.0075 MPa, respectively, and less than 2 % for composition. The binary VLE data were regressed using the phi−phi (direct) method to obtain correlated thermodynamic model parameters. Data reductions using the Peng−Robinson cubic equation of state with the Stryjek−Vera alpha function, along with the Wong−Sandler mixing rule incorporating the NRTL activity coefficient model, satisfactorily represented both systems for all the measured isotherms. All the measured data sets were tested for thermodynamic consistency. The two tests used were the Chueh, Muirbrook, and Prausnitz area test and, probably the most rigorous and theoretically correct of all, the Christiansen and Fredenslund test. The results suggest that the data are consistent. For (propane + cyclopentanol), the latter test indicated a small bias in vapor composition for the 353.15 K isotherm. Henry’s constants were also computed for both systems from the measured experimental data by application of the Krichevsky−Illinskaya equation.

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    Experimental data summary. This material is available free of charge via the Internet at http://pubs.acs.org.

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    Cited By

    This article is cited by 2 publications.

    1. J. David Raal, Wayne Michael Nelson. Gas chromatograph calibration of gas mixtures using a versatile precision volumetric apparatus. Review of Scientific Instruments 2022, 93 (5) https://doi.org/10.1063/5.0083028
    2. Stephanie Peper, José M.S. Fonseca, Ralf Dohrn. High-pressure fluid-phase equilibria: Trends, recent developments, and systems investigated (2009–2012). Fluid Phase Equilibria 2019, 484 , 126-224. https://doi.org/10.1016/j.fluid.2018.10.007

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