PartiaI Molar Volumes of Methanol and Ethanol at lnfinite Dilution in Supercritical Carbon Dioxide

Abstract

ln the present study, partial molar volumes of methanol at 313.15K and ethanol at 308.15K at infinite dilution in supercritical carbon dioxide were measured between 7MPa and 10MPa. Partial molar volumes of alcohol at infinite dilution were evaluated with the molar volume of pure carbon dioxide and the one of the homogeneous fluid made of carbon dioxide and a small amount of alcohol at the same temperature and pressure. The experimental data obtained were correlated with the Soave-Redlich-Kwong equation of state.