ABSTRACT

Liquid liquid phase equilibria of binary solutions of the room temperature ionic liquid (RTIL) 1-methyl- 3-octylimidazolium tetrafluoroborate ([C8mim][BF4]) with 1-heptanol or 2-pentanol were measured. The critical exponents b obtained from the liquid liquid equilibrium data in the critical region were consistent with the 3D-Ising value, which confirmed the 3D-Ising criticality of the investigated binary ionic solutions. The asymmetry of the diameters of the coexistence curveswas analyzed by the complete scaling theory, indicating a significant contribution of the heat capacity related term. The RPM (restricted primitive model)-rescaled critical parameters were calculated, which showed dual characters of both solvophobic and coulombic criticalities of the studied binary ionic solutions.

Compounds

#	Formula	Name
1	C12H23BF4N2	1-methyl-3-octylimidazolium tetrafluoroborate
2	C7H16O	heptan-1-ol
3	C5H12O	pentan-2-ol

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	Refractive index (other wavelength) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Minimum Deviation	16
POMD	2	Refractive index (other wavelength) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Minimum Deviation	8
POMD	3	Refractive index (other wavelength) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Minimum Deviation	6
POMD	2 1	Mole fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Index of refraction calibration data	41
POMD	2 1	Mole fraction - 1 ; Liquid mixture 2	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Index of refraction calibration data	41
POMD	2 1	Refractive index (other wavelength) ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Mole fraction - 1; Liquid mixture 1	Wavelength, nm; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Minimum deviation	41
POMD	2 1	Refractive index (other wavelength) ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Mole fraction - 1; Liquid mixture 2	Wavelength, nm; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Minimum deviation	41
POMD	2 1	Refractive index (other wavelength) ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Minimum Deviation	54
POMD	3 1	Mole fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Index of refraction calibration data	47
POMD	3 1	Mole fraction - 1 ; Liquid mixture 2	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Index of refraction calibration data	47
POMD	3 1	Refractive index (other wavelength) ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Mole fraction - 1; Liquid mixture 1	Wavelength, nm; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Minimum deviation	47
POMD	3 1	Refractive index (other wavelength) ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Mole fraction - 1; Liquid mixture 2	Wavelength, nm; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Minimum deviation	47
POMD	3 1	Refractive index (other wavelength) ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid Wavelength, nm; Liquid	Liquid	Minimum Deviation	54

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Measurements of the liquid liquid phase equilibria of binary solutions of 1-methyl-3-octylimidazolium tetrafluoroborate with 1-heptanol or 2-pentanol

Zhang, X.[Xianshuo], Cui, Z.[Zhencun], Yin, T.[Tianxiang], Zheng, P.[Peizhu], Zhao, J.[Jihua]

ABSTRACT