Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Quaternary isobaric (vapor + liquid + liquid) equilibrium and (vapor + liquid) equilibrium for the system (water + ethanol + cyclohexane + heptane) at 101.3 kPa

Pequenin, A.[Ana], Asensi, J. C.[Juan Carlos], Gomis, V.[Vicente]
J. Chem. Thermodyn. 2011, 43, 8, 1097-1103
ABSTRACT
Experimental isobaric (vapor + liquid + liquid) and (vapor + liquid) equilibrium data for the ternary system {water (1) + cyclohexane (2) + heptane (3)} and the quaternary system {water (1) + ethanol (2) + cyclohexane (3) + heptane (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 C6H12 cyclohexane
2 C7H16 heptane
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 ; Gas
  • Temperature, K; Gas
  • Pressure, kPa; Gas
  • Gas
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 4
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Gas
  • Liquid mixture 2
  • Chromatography
  • 8
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 2 ; Gas
  • Temperature, K; Gas
  • Pressure, kPa; Gas
  • Gas
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 4
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 2 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Gas
  • Liquid mixture 2
  • Chromatography
  • 8
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Gas
  • Liquid mixture 2
  • Chromatography
  • 8
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 3 ; Gas
  • Temperature, K; Gas
  • Pressure, kPa; Gas
  • Gas
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • 4