Solubilities of gases in high-boiling hydrocarbon solvents

Authors

  • C. C. Chappelow III,

    1. Chemical Engineering Department, University of California, Berkeley, California 94720
    Current affiliation:
    1. Pfizer Inc., Easton, Pennsylvania 18042
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  • J. M. Prausnitz

    Corresponding author
    1. Chemical Engineering Department, University of California, Berkeley, California 94720
    • Chemical Engineering Department, University of California, Berkeley, California 94720
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Abstract

Low-pressure solubilities of methane, ethane, propane, n-butane, iso-butane, and hydrogen have been measured in n-hexadecane, n-eicosane, squalane, bicyclohexyl, octamethylcyclotetrasiloxane, diphenylmethane, and 1-methylnaphthalene over the temperature range 25° to 200°C. The accuracy of these measurements is better than 1%. The data for the hydrocarbon gases have been correlated with a generalized configurational entropy and a van Laar-type interaction parameter. The entropic component of that parameter is related to the free volume of the solvent as suggested by Flory's equation-of-state theory of fluid mixtures. The accuracy of the correlation is about ±15%.

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