Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

High-Pressure Phase Equilibria of the Ternary System Oleic Acid + Squalene + Carbon Dioxide

Ruivo, R. M.[Rui M.], Couto, R. M.[Ricardo M.], Simoes, P. C.
J. Chem. Eng. Data 2007, 52, 2, 566-570
ABSTRACT
Vapor-liquid equilibrium data are reported for the ternary system oleic acid + squalene + carbon dioxide in the temperature range of (313 to 333) K and in the pressure range of (14 to 22) MPa. Experiments were performed in a continuous-type equilibrium apparatus where a static mixer promotes the equilibrium between the gas and liquid phases. A low selectivity of carbon dioxide toward squalene was obtained, indicating that the separation is poor. Oleic acid was of technical grade containing other fatty acids in minor quantities. Distribution coefficients of major fatty acids were evaluated in the range described. Equilibrium data were correlated using the Peng- Robinson equation of state with a reasonably good agreement. The interaction parameters of the equation were optimized by minimizing the deviations between the calculated and experimentally determined vapor and liquidphase compositions and distribution coefficients of each component.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 C30H50 2,6,10,14,18,22-tetracosahexaene, 2,6,10,15,19,23-hexamethyl-, (all-E)-
3 C18H34O2 (Z)-9-octadecenoic acid
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 2
  • 3
  • 1
  • Mole fraction - 2 ; Liquid
  • Mole fraction - 2 ; Gas
  • Mole fraction - 3 ; Gas
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Gas
  • Chromatography
  • Chromatography
  • Chromatography
  • 20