Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Vapor liquid equilibrium measurements and correlations for an azeotropic system of ethane + hexafluoroethane

Zhang, Y.[Yu], Gong, M.-Q.[Mao-Qiong], Zhu, H.-B.[Hong-Bo], Wu, J.-F.[Jian-Feng]
Fluid Phase Equilib. 2006, 240, 1, 73-78
ABSTRACT
The research on the isothermal vapor liquid phase behavior for the ethane (R170) + hexafluoroethane (R116) system is presented in this paper. The vapor liquid equilibrium (VLE) data were measured at four temperatures 189.31, 192.63, 247.63 and 252.80 K with an apparatus based on recirculation method. The experimental results were correlated with the Peng Robinson equation of state using two types of mixing rules, the Panagiotopoulos Reid mixing rule and the Huron Vidal mixing rule involving the NRTL model. The calculated data using the regressed parameters were compared with the previous measured results, and good agreements can be observed.
Compounds
# Formula Name
1 C2H6 ethane
2 C2F6 hexafluoroethane
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
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 4
  • POMD
  • 1
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 35
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • CHROM:UFactor:6
  • 35