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

Enthalpy of Solution of Carbon Dioxide in Aqueous Solutions of Triethanolamine at Temperatures of 322.5 K and 372.9 K and Pressures up to 5 MPa

Arcis, H.[Hugues], Ballerat-Busserolles, K.[Karine], Rodier, L.[Laurence], Coxam, J. -Y.[Jean-Yves]
J. Chem. Eng. Data 2012, 57, 12, 3587-3597
ABSTRACT
The enthalpies of solution (?solH) of carbon dioxide (CO2) in two aqueous solutions (w = 0.1500 and w = 0.3000) of triethanolamine (TEA) have been measured for the first time at T = 322.5 K and 372.9 K and p up to 5 MPa, by flow calorimetry. Enthalpies of solution of CO2 (?solH) have been obtained as function of loading a (molCO2*molamine 1). Solubility data (s) of the gas into the solution were also determined. Influences of temperature, pressure, and absorbent composition have been discussed. Our experimental enthalpies of solution have been compared with data derived from a thermodynamic model of phase equilibria based on a ? approach. The enthalpy of solution of CO2 in aqueous solutions of methyldiethanolamine (MDEA), monoethanolamine (MEA), and diethanolamine (DEA) have been compared to the present results to discuss the effects of the hindrance on the nitrogen nucleus as well as its degree of substitution, on the enthalpy of solution
Compounds
# Formula Name
1 H2O water
2 CO2 carbon dioxide
3 C6H15NO3 triethanolamine
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
  • 3
  • 1
  • Mass density, kg/m3 ; Liquid
  • Mass fraction - 3; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 12
  • POMD
  • 3
  • 2
  • 1
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Mass fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Flow calorimetry
  • 166
  • POMD
  • 3
  • 2
  • 1
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Mass fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Flow calorimetry
  • 118
  • POMD
  • 3
  • 2
  • 1
  • Mole fraction - 2 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Mass fraction - 3; Liquid
  • Liquid
  • Gas
  • Saturation condition detected through enthalpy of solution measurement
  • 12