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

Binary Diffusion Coefficients of 2-Ethyltoluene, 3-Ethyltoluene, and 4-Ethyltoluene in Supercritical Carbon Dioxide

Pizarro, C.[Consuelo], Suarez-Iglesias, O.[Octavio], Medina, I.[Ignacio], Bueno, J. L.[Julio L.]
J. Chem. Eng. Data 2009, 54, 5, 1467-1471
ABSTRACT
The binary diffusion coefficients of 2-ethyltoluene, 3-ethyltoluene, and 4-ethyltoluene in supercritical carbon dioxide were determined in a pressure range of (15.0 to 35.0) MPa at temperatures of (313, 323, and 333) K by means of the Taylor-Aris dispersion technique. The influence of pressure, temperature, density, and viscosity on the binary diffusion coefficients was examined, and some general trends were established. The experimental results were compared with the values estimated by several semiempirical equations based on the Stokes-Einstein formula and on the Rough-Hard-Sphere model.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 C9H12 1-ethyl-2-methylbenzene
3 C9H12 1-ethyl-3-methylbenzene
4 C9H12 1-ethyl-4-methylbenzene
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
  • Binary diffusion coefficient, m2/s ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Taylor dispersion method
  • 15
  • POMD
  • 1
  • 3
  • Binary diffusion coefficient, m2/s ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 3; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Taylor dispersion method
  • 15
  • POMD
  • 1
  • 4
  • Binary diffusion coefficient, m2/s ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 4; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Taylor dispersion method
  • 15