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

Solubility of 2-Ethyl-1-hexanol, 2-Ethylhexanoic Acid, and Their Mixtures in Supercritical Carbon Dioxide

Ghaziaskar, H. S., Eskandari, H.[Habibollah], Daneshfar, A.[Ali]
J. Chem. Eng. Data 2003, 48, 2, 236-240
ABSTRACT
Solubilities of 2-ethyl-1-hexanol (1), 2-ethyl hexanoic acid (2), and their mixtures in supercritical carbon dioxide (SC-CO2) (3) were reported. Solubilities were measured at a constant temperature of 313 K and 323 K, at pressures varying from (68 to 180) bar for the binary systems and at a constant pressure of 138 bar at temperatures varying from (313 to 373) K for the ternary system. Temperature dependences of the solubilities for a x1 = 0.5 mixture were determined. The effect of the mixture composition of the acid + alcohol mixture in SC-CO2 was studied. The total solubility of the mixtures in SC-CO2 is independent of the x1 of the liquid mixture in the equilibrium cell. The Chrastil model for solubilities at 313 K and 323 K was evaluated.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 C8H18O 2-ethyl-1-hexanol
3 C8H16O2 2-ethylhexanoic 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
  • 1
  • Mole fraction - 2 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Liquid
  • CHROM:UFactor:8
  • 22
  • POMD
  • 1
  • 3
  • Mole fraction - 3 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Liquid
  • CHROM:UFactor:8
  • 22
  • POMD
  • 2
  • 1
  • 3
  • Mole fraction - 2 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Liquid
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Liquid
  • CHROM:UFactor:8
  • 9
  • POMD
  • 2
  • 1
  • 3
  • Mole fraction - 3 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Liquid
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Liquid
  • CHROM:UFactor:8
  • 9