ABSTRACT

The solubility of carbon dioxide in three bis(trifluoromethylsulfonyl)imide-based ionic liquids:N-methyl-n-pentylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([p(5)mpyrr][Tf2N]), 1-butyl-2,3-dimethylimidazolium bis(trifluoromethyl sulfonyl)imide ([bmmim][Tf2N]), and tributylmethylphospho-nium bis(trifluoromethyl sulfonyl)imide ([P4441][Tf2N]) was measured at 298.15, 313.15, and 343.15 K and pressures up to about 1.9 MPa. The data were well correlated with the Soave-Redlich-Kwong equation of state (SRK-EoS). Henry's law constants for CO2 in the three ILs ([p(5)mpyrr][Tf2N], [bmmim][Tf2N],and [P4441][Tf2N]) at 298.15 K were 3.1, 3.5, and 3.3 MPa, respectively.

Compounds

#	Formula	Name
1	CO2	carbon dioxide
2	C12H22F6N2O4S2	1-pentyl-1-methylpyrrolidinium 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide
3	C15H30F6NO4PS2	Tributylmethylphosphonium bis[(trifluoromethyl)sulfonyl]imide
4	C11H17F6N3O4S2	1-butyl-2,3-dimethyl-1H-imidazolium bis(trifluoromethylsulfonyl)amide

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	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	16
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	16
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	16
POMD	1 4	Mole fraction - 1 ; Gas	Temperature, K; Liquid Pressure, kPa; Liquid		Gas Liquid	Chromatography	36
POMD	1 2	Mole fraction - 1 ; Gas	Temperature, K; Liquid Pressure, kPa; Liquid		Gas Liquid	Chromatography	36
POMD	1 3	Mole fraction - 1 ; Gas	Temperature, K; Liquid Pressure, kPa; Liquid		Gas Liquid	Chromatography	36

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Solubility of carbon dioxide in three [Tf2N] ionic liquids

Tagiuri, A.[Ali], Sumon, K. Z.[Kazi Z.], Henni, A.[Amr]

ABSTRACT