Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Measurement of Henry s Law constant and infinite dilution activity coefficient of isopropyl mercaptan and isobutyl mercaptan in (methyldiethanolamine (1) + water (2)) with w1 = 0.25 and 0.50 at temperature of (298 to 348) K using inert gas stripping method

Zin, R. M.[Rohani Mohd], Coquelet, C.[Christophe], Valtz, A.[Alain], Mutalib, M. I. A.[Mohamed I. Abdul], Sabil, K. M.[Khalik Mohamad]
J. Chem. Thermodyn. 2016, 93, 193-199
ABSTRACT
In this study, the Henry s Law constant and the activity coefficients in infinite dilution in a mass fraction of (25 and 50)% of methyldiethanolamine (MDEA) aqueous solution within the temperature range of (298 to 348) K at atmospheric pressure, were measured. An inert gas stripping method was used to perform all the measurements. The new values of Henry s Law constant and the activity coefficients in infinite dilution correlation with solute molecular size were explained. The influence of the solvent is discussed taking into consideration the heat of absorptions for different MDEA concentrations. Experimental results are compared to literature data wherever available.
Compounds
# Formula Name
1 C3H8S 2-propanethiol
2 C4H10S 2-methyl-1-propanethiol
3 C5H13NO2 N-methyldiethanolamine
4 H2O water
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
  • 4
  • Henry's Law constant (mole fraction scale), kPa - 1 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • Chromatography
  • 6
  • POMD
  • 1
  • 3
  • 4
  • Henry's Law constant (mole fraction scale), kPa - 1 ; Liquid
  • Temperature, K; Liquid
  • Solvent: Mass fraction - 3; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • Chromatography
  • 18
  • POMD
  • 2
  • 4
  • Henry's Law constant (mole fraction scale), kPa - 2 ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 2; Liquid
  • Liquid
  • Gas
  • Chromatography
  • 5
  • POMD
  • 3
  • 2
  • 4
  • Henry's Law constant (mole fraction scale), kPa - 2 ; Liquid
  • Temperature, K; Liquid
  • Solvent: Mass fraction - 3; Liquid
  • Mole fraction - 2; Liquid
  • Liquid
  • Gas
  • Chromatography
  • 19