Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Experimental and correlated tie-line data for aqueous mixtures of 2-butanol with 2-ethyl-1-hexanol at various temperatures

Gilani, H. G., Golpour, M., Ashraf, S. S.
Fluid Phase Equilib. 2011, 310, 1-2, 192-197
ABSTRACT
Liquid-liquid equilibrium data for the (water + 2-butanol + 2-ethyl-1-hexanol) ternary system were determined at T = (298.2, 308.2, 318.2, and 328.2) K in ambient pressure. This ternary system exhibits type-2 behavior of LLE. Distribution coefficients and separation factors were measured to evaluate the extracting capacity of the solvent. The consistency of the experimental tie-line data was determined through the Othmer-Tobias and Bachman equations. The raw experimental data were correlated using the nonrandom two-liquid (NRTL) model. The average root-mean-square deviation between the experimental and calculated mass fractions was 0.84 %.
Compounds
# Formula Name
1 H2O water
2 C4H10O butan-2-ol
3 C8H18O 2-ethyl-1-hexanol
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 - 1 ; Liquid mixture 1
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 24