Abstract
The regular solution theory was applied to predict and correlate Henry''s constants for hydrogen, nitrogen, methane, ethane, and propane in hydrocarbon solvents. As the system temperature is above the critical temperature of the solute, the liquid properties of the supercritical component are hypothetical. In the present paper, a new method is proposed to estimate such hypothetical liquid properties.
The calculated results represent Henry''s constants fairly well over a wide range of temperature, though a slight deviation remained in the region of very low temperatures and in the region near the critical temperature of the solvent. Thus, it was ascertained that the regular solution theory was applicable to predict and correlate Henry''s constants for nonpolar molecules. The present estimation for hypothetical liquid properties is considered to be adequate for nonpolar molecules.
