Influence of cosolvent on solubilities of fatty acids and higher alcohols in supercritical carbon dioxide

Yoshio Koga, Yoshio Iwai, Yoshiaki Hata, Morio Yamamoto, Yasuhiko Arai

Research output: Contribution to journalArticle

67 Citations (Scopus)

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 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.

Original languageEnglish
Pages (from-to)115-128
Number of pages14
JournalFluid Phase Equilibria
Volume125
Issue number1-2
DOIs
Publication statusPublished - Oct 15 1996

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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