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

Thermodynamic Investigation of Electrolytes of the Vanadium Redox Flow Battery (III): Volumetric Properties of Aqueous VOSO4

Qin, Y.[Ye], Liu, J.-G.[Jian-Guo], Yan, C.-W.[Chuan-Wei]
J. Chem. Eng. Data 2012, 57, 1, 102-105
ABSTRACT
This paper reports the densities of aqueous VOSO4 that were measured gravimetrically at temperatures from (283.15 to 323.15) K. The apparent molar volume, fVB, the partial molar volume of VOSO4, V-B, and coefficient of thermal expansion of the solution, a, were calculated. The values of the apparent molar volume, fVB, were fitted to Pitzer's model for volumetric properties by the method of least-squares, which allowed the partial molar volume of the VOSO4 at infinite dilution, V-B0, and Pitzer's parameters, ssMX(0)V, ssMX(1)V, and ssMX(2)V, to be obtained. The small standard deviations of the fits show that Pitzer's model is also appropriate for representing the volumetric properties of aqueous solutions of VOSO4.
Compounds
# Formula Name
1 H2O water
2 O5SV oxovanadium(IV) sulfate
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
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Molality, mol/kg - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Buoyancy - hydrostatic balance with magnetic suspension - one sinker
  • 66