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

Experimental and Modeling of Vapor Liquid Equilibria for Electrolyte Solution Systems

Xu, X.[Xianzhen], Hu, Y.[Yangdong], Wu, L.[Lianying], Zhang, S.[Suhong]
J. Chem. Eng. Data 2014, 59, 11, 3741-3748
ABSTRACT
Vapor liquid equilibrium (VLE) data are reported for binary and mixed electrolyte solutions containing CaCl2, MgCl2, K2SO4, MgSO4, and KCl at total molality of salt between (0.0 and 12.0) mol*kg 1. The measurements were carried out with a pressure between (6.3 and 101.3) kPa in a computer-controlled glass apparatus. An activity coefficient model based on the hypothesis of hydration was deduced in this paper. Experimental data and literature data for 20 salts, with temperature spanning from (273.15 to 415.85) K, were successfully correlated using the developed model. Meanwhile, the model was also successfully applied to predict the VLE data in mixed electrolyte solution systems with the binary parameters.
Compounds
# Formula Name
1 H2O water
2 CaCl2 calcium chloride
3 Cl2Mg magnesium chloride
4 K2O4S potassium sulfate
5 MgO4S magnesium 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
  • Vapor or sublimation pressure, kPa ; Liquid
  • Molality, mol/kg - 2; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 236
  • POMD
  • 1
  • 3
  • Vapor or sublimation pressure, kPa ; Liquid
  • Molality, mol/kg - 3; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 120
  • POMD
  • 1
  • 4
  • Vapor or sublimation pressure, kPa ; Liquid
  • Molality, mol/kg - 4; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 96
  • POMD
  • 5
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Molality, mol/kg - 5; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 119