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

Fast Determination of Binary Vapor Liquid Equilibrium of CO2-Based Mixtures at Elevated Pressures

Wang, W.[Wei], Yun, Z.[Zhi], Tang, Z.[Zhg], Gui, X.[Xia]
J. Chem. Eng. Data 2015, 60, 6, 1642-1647
ABSTRACT
The binary vapor liquid equilibrium data of CO2 in ethyl butyrate, diethylene glycol diethyl ether, and isobutyl acetate were determined up to 333.15 K and 10 MPa and an improved apparatus based on the static-analytic method has been developed for fast determinations of VLE data. Then, the total pressure PE, CO2 mole fraction x1 in liquid-phase, and CO2 mole fraction y1 in vapor-phase at the equilibrium state were directly obtained by gas chromatography. The experimental data were correlated with a modified Patel Teja equation of state (PT EOS) combined with the traditional van der Waals one-fluid mixing rules, and it was found that there was a good conformity between experiment and model calculation.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 C6H12O2 ethyl butanoate
3 C8H18O3 diethylene glycol diethyl ether
4 C6H12O2 2-methylpropyl ethanoate
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
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 48
  • POMD
  • 2
  • 1
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • Chromatography
  • 48
  • POMD
  • 3
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 35
  • POMD
  • 3
  • 1
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • Chromatography
  • 35
  • POMD
  • 4
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 45
  • POMD
  • 4
  • 1
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • Chromatography
  • 45