ABSTRACT

The solubilities and diffusion coefficients of 1,1,1,3,3-pentafluoropropane (R245fa), 1,1,1,2,3,3,3-heptafluoropropane (R227ea) and 1,1,1,3,3,3-hexafluoropropane (R236fa) in 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][Tf2N]) were determined experimentally along five isotherms (303.15, 313.15, 323.15, 333.15 and 343.15 K) with pressures from 0.01 to 0.50 MPa. The solubility measurements were carried out using the isochoric saturation method. A semi-infinite volume method was used to calculate diffusion coefficient via the time-dependent pressure-decay data. NRTL model was used to correlate the gas solubility data of R245fa, R227ea and R236fa in [HMIM][Tf2N] with the average absolute relative deviations less than 1.0%, while Wilke-Chang equation was used to correlate the diffusion coefficient data with the average absolute relative deviations less than 9.7%.

Compounds

#	Formula	Name
1	C3H3F5	1,1,1,3,3-pentafluoropropane
2	C3HF7	1,1,1,2,3,3,3-heptafluoropropane
3	C3H2F6	1,1,1,3,3,3-hexafluoropropane
4	C12H19F6N3O4S2	1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide

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 4	Mole fraction - 1 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid Gas	volumetric method	30
POMD	1 4	Binary diffusion coefficient, m2/s ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Mole fraction - 1; Liquid	Liquid	pressure decay method	5
POMD	2 4	Mole fraction - 2 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid Gas	volumetric method	30
POMD	2 4	Binary diffusion coefficient, m2/s ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Mole fraction - 2; Liquid	Liquid	pressure decay method	5
POMD	3 4	Mole fraction - 3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid Gas	volumetric method	30
POMD	3 4	Binary diffusion coefficient, m2/s ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Mole fraction - 3; Liquid	Liquid	pressure decay method	5

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Solubilities and diffusivities of R227ea, R236fa and R245fa in 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide

Liu, Xiangyang, Pan, Pei, Yang, Feng, He, Maogang

ABSTRACT