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

Isobaric Vapor-Liquid-Liquid Equilibrium and Vapor-Liquid Equilibrium for the Quaternary System Water-Ethanol-Cyclohexane-Isooctane at 101.3 kPa

Pequenin, A.[Ana], Asensi, J. C.[Juan Carlos], Gomis, V.[Vicente]
J. Chem. Eng. Data 2010, 55, 3, 1227-1231
ABSTRACT
Experimental isobaric vapor-liquid-liquid and vapor-liquid equilibrium data for the ternary system water (1) -cyclohexane (2) -isooctane (3) and the quaternary system water (1) -ethanol (2) -cyclohexane (3) -isooctane (4) were measured at 101.3 kPa. An all-glass, dynamic recirculating still equipped with an ultrasonic homogenizer was used to determine the VLLE. The results obtained show that the system does not present quaternary azeotropes. The point-by-point method by Wisniak for testing the thermodynamic consistency of isobaric measurements was used to test the equilibrium data.
Compounds
# Formula Name
1 H2O water
2 C6H12 cyclohexane
3 C8H18 2,2,4-trimethylpentane
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 mixture 1
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 2 ; 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
  • Titration method
  • Titration method
  • Titration method
  • Titration method
  • Titration method
  • Titration method
  • 4