ABSTRACT

This work was devoted to propose a series of novel aqueous two-phase systems (ATPSs)composed of 1-alkyl-3-methylimidazolium bromide + Rb2CO3/Cs2CO3+ water ([C2mim]Br = 1-ethyl-3-methylimidazolium bromide, [C3mim]Br = 1-propyl-3-methylimidazolium bromide, [C4mim]Br = 1-butyl-3-methylimidazolium bromide, [Amim]Br = 1-allyl-3-methylimidazolium bromide). The phasebehavior of these ATPSs had been experimentally determined at T = 288.15 K less than T less than 308.15 K. In particu-lar, the effects of the ionic liquid structure, temperature and the types of inorganic salts on the phaseequilibrium of ATPSs have been discussed in detail. The binodal curves were fitted by a three-parameterequation. The tie-lines were correlated by the Othmer Tobias and Bancroft equations.

Compounds

#	Formula	Name
1	C6H11BrN2	1-ethyl-3-methylimidazolium bromide
2	C7H13BrN2	1-methyl-3-propylimidazolium bromide
3	C8H15BrN2	1-butyl-3-methylimidazolium bromide
4	C7H11BrN2	1-allyl-3-methylimidazolium bromide
5	CO3Rb2	rubidium carbonate
6	CCs2O3	cesium carbonate
7	H2O	water

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	5 7 1	Mass density, kg/m3 ; Liquid	Mass fraction - 1; Liquid Mass fraction - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	30
POMD	5 7 1	Refractive index (Na D-line) ; Liquid	Mass fraction - 1; Liquid Mass fraction - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	30
POMD	5 7 1	Mole fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Mole fraction - 5; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	51
POMD	5 7 1	Mass fraction - 5 ; Liquid mixture 1 Mass fraction - 1 ; Liquid mixture 2 Mass fraction - 5 ; Liquid mixture 2	Mass fraction - 1; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data Density calibration data Density calibration data	4
POMD	5 7 2	Mass density, kg/m3 ; Liquid	Mass fraction - 2; Liquid Mass fraction - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	30
POMD	5 7 2	Refractive index (Na D-line) ; Liquid	Mass fraction - 2; Liquid Mass fraction - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	30
POMD	5 7 2	Mass fraction - 2 ; Liquid mixture 1	Mass fraction - 5; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	18
POMD	5 7 2	Mass fraction - 5 ; Liquid mixture 1 Mass fraction - 2 ; Liquid mixture 2 Mass fraction - 5 ; Liquid mixture 2	Mass fraction - 2; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data Density calibration data Density calibration data	5
POMD	5 7 3	Mass density, kg/m3 ; Liquid	Mass fraction - 3; Liquid Mass fraction - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	30
POMD	5 7 3	Refractive index (Na D-line) ; Liquid	Mass fraction - 3; Liquid Mass fraction - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	30
POMD	5 7 3	Mass fraction - 3 ; Liquid mixture 1	Mass fraction - 5; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	22
POMD	5 7 3	Mass fraction - 5 ; Liquid mixture 1 Mass fraction - 3 ; Liquid mixture 2 Mass fraction - 5 ; Liquid mixture 2	Mass fraction - 3; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data Density calibration data Density calibration data	4
POMD	5 7 4	Mass density, kg/m3 ; Liquid	Mass fraction - 4; Liquid Mass fraction - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	30
POMD	5 7 4	Refractive index (Na D-line) ; Liquid	Mass fraction - 4; Liquid Mass fraction - 5; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	30
POMD	5 7 4	Mass fraction - 4 ; Liquid mixture 1	Mass fraction - 5; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	18
POMD	5 7 4	Mass fraction - 5 ; Liquid mixture 1 Mass fraction - 4 ; Liquid mixture 2 Mass fraction - 5 ; Liquid mixture 2	Mass fraction - 4; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data Density calibration data Density calibration data	4
POMD	6 7 2	Mass density, kg/m3 ; Liquid	Mass fraction - 2; Liquid Mass fraction - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	30
POMD	6 7 2	Refractive index (Na D-line) ; Liquid	Mass fraction - 2; Liquid Mass fraction - 6; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	30
POMD	6 7 2	Mass fraction - 2 ; Liquid mixture 1	Mass fraction - 6; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Titration method	16
POMD	6 7 2	Mass fraction - 6 ; Liquid mixture 1 Mass fraction - 2 ; Liquid mixture 2 Mass fraction - 6 ; Liquid mixture 2	Mass fraction - 2; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Density calibration data Density calibration data Density calibration data	5

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Phase behavior of aqueous two-phase systems composed of1-alkyl-3-methylimidazolium bromide + Rb2CO3/Cs2CO3+ water

Yin, G.[Guanwei], Li, S.[Shuni], Zhai, Q.[Quanguo], Jiang, Y.[Yucheng], Hu, M.[Mancheng]

ABSTRACT