Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Isothermal VLE measurements for the binary mixture of 2,3,3,3-tetrafluoroprop-1-ene (HFO-1234yf) + 1,1-difluoroethane (HFC-152a)

Hu, P. [Peng], Chen, L.-X.[Long-Xiang], Zhu, W.-B.[Wan-Bao], Jia, L.[Lei], Chen, Z.[Ze-shao]
Fluid Phase Equilib. 2014, 373, 80-83
ABSTRACT
Isothermal vapor-liquid equilibrium (VLE) data for the binary mixture of 2,3,3,3-tetrafluoroprop-1-ene (HFO-1234yf) + 1,1-difluoroethane (HFC-152a) were measured at temperatures from 283.15 K to 323.15 K using a recirculation apparatus. The experimental data were correlated by using PR EoS with vdW mixing rule, the comparison between the correlation results and experimental data showed a good agreement. HFO-1234yf + HFC-152a system shows not only azeotropic behavior but also near azeotropic behavior with a very small temperature glide of less than 0.4 K within the complete range of composition and of temperature.
Compounds
# Formula Name
1 C3H2F4 2,3,3,3-tetrafluoro-1-propene
2 C2H4F2 1,1-difluoroethane
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
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 5
  • POMD
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 5
  • POMD
  • 2
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 60
  • POMD
  • 2
  • 1
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • Chromatography
  • 60
  • POMD
  • 2
  • 1
  • Azeotropic composition: mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • By T or P extreme
  • 5
  • POMD
  • 2
  • 1
  • Azeotropic pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • By P(X) extreme
  • 5