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

Carbon Dioxide Solubilities in Decanoic Acid-Based Hydrophobic Deep Eutectic Solvents

Zubeir, Lawien F., Osch, Dannie J. G. P. van, Rocha, Marisa A. A., Banat, Fawzi, Kroon, Maaike C.
J. Chem. Eng. Data 2018, 63, 4, 913-919
ABSTRACT
The solubility of CO2 in hydrophobic deep eutectic solvents (DESs) has been measured for the first time. Six different hydrophobic DESs are studied in the temperature range from 298 to 323 K and at CO2 pressures up to 2 MPa. The results are evaluated by comparing the solubility data with existing hydrophilic DESs and currently applied physical solvents and fluorinated ionic liquids. The DESs are prepared by mixing decanoic acid with a quaternary ammonium salt with different halide anions and alkyl chain lengths. The measured CO2 solubilities are similar to those found in renowned fluorinated ILs, while the heats of CO2 absorption are in the range of nonpolar solvents. The presented DESs show good potential to be used as CO2 capture agents.
Compounds
# Formula Name
1 C10H20O2 decanoic acid
2 C25H54ClN N-methyl-N,N-dioctyl-1-octanaminium chloride
3 C25H54BrN methyltrioctylammonium bromide
4 C32H68ClN tetraoctylammonium chloride
5 C32H68BrN tetraoctylammonium bromide
6 C16H36ClN tetrabutylammonium chloride
7 CO2 carbon dioxide
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
  • 7
  • Mole fraction - 7 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Amount ratio of component to other component of binary solvent - 1; Liquid
  • Liquid
  • Gas
  • Magnetic Suspension Balance
  • 18
  • POMD
  • 1
  • 3
  • 7
  • Mole fraction - 7 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Amount ratio of component to other component of binary solvent - 1; Liquid
  • Liquid
  • Gas
  • Magnetic Suspension Balance
  • 27
  • POMD
  • 1
  • 6
  • 7
  • Mole fraction - 7 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Amount ratio of component to other component of binary solvent - 1; Liquid
  • Liquid
  • Gas
  • Magnetic Suspension Balance
  • 36
  • POMD
  • 1
  • 4
  • 7
  • Mole fraction - 7 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Amount ratio of component to other component of binary solvent - 1; Liquid
  • Liquid
  • Gas
  • Magnetic Suspension Balance
  • 69
  • POMD
  • 1
  • 5
  • 7
  • Mole fraction - 7 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Amount ratio of component to other component of binary solvent - 1; Liquid
  • Liquid
  • Gas
  • Magnetic Suspension Balance
  • 27