Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Experimental and modelling investigation of H2S solubility in N-methylimidazole and gamma-butyrolactone

Salooki, Mahdi Koolivand, Shokouhi, Mohammad, Farahani, Hadi, Keshavarz, Mohammad, Esfandyari, Morteza, Ahari, Jafar Sadeghzadeh
J. Chem. Thermodyn. 2019, 135, 133-142
ABSTRACT
The solubility of hydrogen sulfide (H2S) in N-methylimidazole (NMI) and gamma-butyrolactone (GBL) were experimentally measured. Gas concentrations were systematically measured by isochoric saturation method at temperatures from (303.15 to 353.15) K and pressure from vapour pressure of solvent up to about 1.2 MPa, in all experiments mole fraction of dissolved gas has been measured with uncertainty order of 10-3. In order to construct a GA-artificial neural network (ANN)-based model, the H2S solubility, molality and total pressure were selected for the output. The precision of the GA is compared with experimental data and also with thermodynamic modelling approach in which Peng-Robinson-Stryjek-Vera (PRSV) cubic equation of state with Panagiotopoulos-Reid combining rule has been chosen for this purpose.
Compounds
# Formula Name
1 H2S hydrogen sulfide
2 C4H6O2 .gamma.-butyrolactone
3 C4H6N2 1-methylimidazole
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
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Volumetric method
  • 34
  • POMD
  • 1
  • 3
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Gas
  • Volumetric method
  • 39