Abstract
Influences of cosolvents on the solubilities of fatty acids (palmitic acid (C 15H 31COOH) and stearic acid (C 17H 35COOH)) and higher alcohols (cetyl alcohol (C 16H 33OH) and stearyl alcohol (C 18H 37OH)) in supercritical carbon dioxide were measured by using a flow-type apparatus. Experiments were carried out at 308.2 K under 9.9, 14.8 and 19.7 MPa. Ethanol and octane were used as cosolvents. The concentration of cosolvent was up to 10 mol %. The experimental results were correlated by the regular solution model coupled with the Flory-Huggins theory using the local composition of cosolvent around the solute molecule.
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