Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Experiments and theory for the surface tensions of carbonated MDEA - PZ aqueous solutions

Fu, D.[Dong], Xu, Y.[Yifei], Hua, X.[Xueying]
Fluid Phase Equilib. 2012, 314, 121-127
ABSTRACT
Surface tensions of carbonated N-methyldiethanolamine (MDEA) piperazine (PZ) aqueous solutions were measured at the temperatures ranging from 293.15 to 323.15 K. A theoretical model was proposed to correlate the surface tensions and the calculated results agreed well with the experiments. The residual MDEA and PZ in the carbonated aqueous solutions were determined on the basic of shuttle mechanism. The temperature, amine concentration and CO2 loading (alpha, mole number of CO2/mole number of MDEA + PZ) dependences of the surface tensions were demonstrated.
Compounds
# Formula Name
1 C5H13NO2 N-methyldiethanolamine
2 C4H10N2 piperazine
3 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
  • 2
  • 3
  • Surface tension liquid-gas, N/m ; Liquid
  • Temperature, K; Liquid
  • Mass fraction - 1; Liquid
  • Mass fraction - 2; Liquid
  • Liquid
  • Air at 1 atmosphere
  • Ring tensiometer
  • 48