Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

LLE, VLE and VLLE data for the water n-butanol n-hexane system at atmospheric pressure

Gomis, V., Font, A., Saquete, M. D., Garcia-Cano, J.
Fluid Phase Equilib. 2012, 316, 135-140
ABSTRACT
Isothermal liquid-liquid equilibria were measured for the water n-butanol n-hexane system at 313.15 K. Isobaric vapor-liquid (VLE) and vapor-liquid-liquid equilibria (VLLE) were measured for the same system at normal atmospheric pressure using an all-glass dynamic recirculating still with an ultrasonic homogenizer coupled to the boiling flask. The experimental LLE, VLE and VLLE data were found to be thermodynamically consistent. The data was correlated using the NRTL and UNIQUAC models and predicted by means of UNIFAC. The parameters set thus obtained reproduces the LLE experimental data appropriately. However, it has been difficult to correlate the VLLE data and only the NRTL model produces an acceptable solution.
Compounds
# Formula Name
1 C4H10O butan-1-ol
2 C6H14 hexane
3 H2O water
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
  • 1
  • 2
  • 3
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 3 ; Liquid mixture 2
  • Mole fraction - 3; Liquid mixture 1
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 12
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 1 ; Liquid mixture 2
  • Mole fraction - 1 ; Gas
  • Mole fraction - 3 ; Liquid mixture 1
  • Mole fraction - 3 ; Liquid mixture 2
  • Mole fraction - 3 ; Gas
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Gas
  • Chromatography
  • Chromatography
  • Chromatography
  • Chromatography
  • Chromatography
  • Chromatography
  • 13
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 1 ; Liquid
  • Mole fraction - 1 ; Gas
  • Mole fraction - 3 ; Gas
  • Temperature, K; Liquid
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Chromatography
  • Chromatography
  • Chromatography
  • 42