Deep eutectic solvents (DESs), derived from the mixtures of two or more hydrogen bond acceptor (HBA) and hydrogen bond donor (HBD), were extensively reported as gas absorbents. In this work, four kinds of DESs were prepared from choline chloride (HBA) and glycerol, ethylene glycol, N-methylurea, and trifluoroacetamide. The molar ratio was fixed at 1:2 of choline chloride to HBD. New experimental results were reported for the solubility of NH3 in these DES over the temperature range of (303.15 333.15) K and pressures up to 580 kPa using isochoric saturation method. The molarity of NH3 in the DESs ranges up to 16.27 mol.kg 1. The dependence of the NH3 solubility in the DESs on temperature and pressure were accurately represented by Henry s law model. Standard Gibbs energy, dissolution enthalpy and dissolution entropy were further deduced from Henry s law constant of NH3 in the DESs.
Compounds
#
Formula
Name
1
C5H14ClNO
choline chloride
2
C3H8O3
glycerol
3
C2H6O2
1,2-ethanediol
4
C2H6N2O
methylurea
5
C2H2F3NO
2,2,2-trifluoroacetamide
6
H3N
ammonia
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.