Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Diffusion coefficients and VLE data of aqueous phosphoric acid

Lang, S.[Sebastian], Kazdal, T. J.[Timur J.], Kuhl, F.[Frank], Hampe, M. J.[Manfred J.]
J. Chem. Thermodyn. 2014, 68, 75-81
ABSTRACT
In this work, transport and thermodynamic properties of phosphoric acid/water mixtures were determined experimentally over a wide range of concentrations. Liquid binary diffusion coefficients were measured using the Taylor dispersion technique at various temperatures and concentrations. The second part of this work concerns itself with the (vapour + liquid) phase equilibrium of phosphoric acid and water up to concentrations of 105 wt% at different pressures.
Compounds
# Formula Name
1 H3O4P phosphoric acid
2 H2O water
3 O5P2 diphosphorus pentaoxide
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 ; Liquid
  • Temperature, K; Liquid
  • Mass fraction - 1; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Taylor dispersion method
  • 22
  • POMD
  • 3
  • 2
  • Boiling temperature at pressure P, K ; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 43
  • POMD
  • 3
  • 2
  • Boiling temperature at pressure P, K ; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 84
  • POMD
  • 3
  • 2
  • Mole fraction - 3 ; Gas
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Gas
  • Liquid
  • Density calibration data
  • 3
  • POMD
  • 3
  • 2
  • Mole fraction - 3 ; Gas
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Gas
  • Liquid
  • Density calibration data
  • 13