INFLUENCE OF COSOLVENT ON SOLUBILITIES OF FATTY-ACIDS AND HIGHER ALCOHOLS IN SUPERCRITICAL CARBON-DIOXIDE

Authors
KOGA Y IWAI Y HATA Y YAMAMOTO M ARAI Y
Citation
Y. Koga et al., INFLUENCE OF COSOLVENT ON SOLUBILITIES OF FATTY-ACIDS AND HIGHER ALCOHOLS IN SUPERCRITICAL CARBON-DIOXIDE, Fluid phase equilibria, 125(1-2), 1996, pp. 115-128
Citations number
13
Categorie Soggetti
Engineering, Chemical","Chemistry Physical
Journal title
Fluid phase equilibria → ACNP
ISSN journal
03783812
Volume
125
Issue
1-2
Year of publication
1996
Pages
115 - 128
Database
ISI
SICI code
0378-3812(1996)125:1-2<115:IOCOSO>2.0.ZU;2-V
Abstract
Influences of cosolvents on the solubilities of fatty acids (palmitic acid (C15H31COOH) and stearic acid (C17H35COOH)) and higher alcohols ( cetyl alcohol (C16H33OH) and stearyl alcohol (C18H37OH)) in supercriti cal carbon dioxide were measured by using a flow-type apparatus. Exper iments were carried out at 308.2 K under 9.9, 14.8 and 19.7 MPa. Ethan ol and octane were used as cosolvents. The concentration of cosolvent was up to 10 mol%. The experimental results were correlated by the reg ular solution model coupled with the Flory-Huggins theory using the lo cal composition of cosolvent around the solute molecule.