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

High-Pressure Phase Equilibria of Carbon Dioxide + 1-Octanol Binary System

Sima, Sergiu, Ionita, Simona, Secuianu, Catinca, Feroiu, Viorel, Geana, Dan
J. Chem. Eng. Data 2018, 63, 4, 1109-1122
ABSTRACT
New isothermal vapor-liquid equilibrium (VLE) and vapor-liquid-liquid equilibrium (VLLE) data for the carbon dioxide + 1-octanol system are reported at several temperatures (303.15, 310.15, 315.15, 323.15, and 333.15) K and pressures up to 145 bar. A staticanalytical method with phase sampling was used. The experimental results of this study are compared with literature data when available, and discussed. The new and all available literature data for the carbon dioxide + 1-octanol binary system are modeled with the cubic General Equation of State (GEOS) and Peng-Robinson (PR) equations of state (EoS) with classical van der Waals mixing rules. The aforementioned EoSs were used to model the phase behavior of the carbon dioxide + 1-octanol binary system (critical curves, the three-phase equilibrium curve, isothermal VLE, and vapor-liquid-liquid equilibria), using a semipredictive approach. The results of the calculations are compared to the new data reported in this work and to all available literature data. The results show a satisfactory level of agreement between the models and the experimental data.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 C8H18O octan-1-ol
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
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 56
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Gas
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Gas
  • Liquid
  • volumetric
  • 56
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • OTHER
  • 4
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER
  • 4