ABSTRACT

A separation process is necessary for the recycling of the solvent and diluent from a molybdenum(Mo) acid leaching solution. Acetylacetone is a commercial Mo solvent and phosphonium-based ionicliquid (IL) that is a promising green selective solvent for Mo ions or dilutor based on the Mo extraction test. To develop a recycling process for the solvent, pseudo ternary liquid liquid equilibria (LLE),a separation process design data set, was determined for several systems at 298.15 K: {Aqueous acid solution (AS-solution) + acetylacetone + tri-hexyltetradecyl phosphonium chloride ([P666,14][Cl])},{AS-solution + acetylacetone + tri-hexyltetradecyl phosphonium bis(2,2,4-trimethylpentyl) phosphinate ([P666,14][TMPP])} and {AS-solution + acetylacetone + tri-hexyltetradecylphosphonium dictanamide([P666,14][DCA])}. The experiments were carried out at atmospheric pressure using stirred and thermoregulated cells. The experimental LLE data for the aforementioned pseudo ternary systems werecorrelated using the non-random two liquid (NRTL) activity coefficient model. In addition, mix-ture properties, namely the excess molar volume (VE) and deviations of the refractive indices( R), were determined for the following binary systems at 298.15 K: {acetylacetone + [P666,14][Cl]},{acetylacetone + [P666,14][TMPP]} and {acetylacetone + [P666,14][DCA]}. These binary data were correlatedwith the Redlich-Kister polynomial.

Compounds

#	Formula	Name
1	H2O	water
2	C24H51N	trioctylamine
3	C12H27O4P	tributyl phosphate
4	C5H8O2	2,4-pentanedione
5	C32H68ClP	trihexyl(tetradecyl)phosphonium chloride
6	C48H102O2P2	trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl)phosphinate
7	C34H68N3P	tetradecyl(trihexyl)phosphonium dicyanamide
8	C10H15F6N3O4S2	1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide
9	C12H23BF4N2	1-methyl-3-octylimidazolium tetrafluoroborate
10	C10H19BF4N2	1-hexyl-3-methylimidazolium tetrafluoroborate
11	C8H15F6N2P	1-butyl-3-methylimidazolium hexafluorophosphate
12	C8H11F6N3O4S2	1-ethyl-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	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	5	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	7	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	7	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	8	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	8	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	9	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	9	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	10	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	10	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	11	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	11	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	12	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	12	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	4 5	Mass density, kg/m3 ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	11
POMD	4 5	Refractive index (Na D-line) ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Standard Abbe refractometry	11
POMD	4 6	Mass density, kg/m3 ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	11
POMD	4 6	Refractive index (Na D-line) ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Standard Abbe refractometry	11
POMD	4 7	Mass density, kg/m3 ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	11
POMD	4 7	Refractive index (Na D-line) ; Liquid	Mole fraction - 4; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Standard Abbe refractometry	11

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Liquid-liquid equilibria, excess molar volume and deviations of the refractive indices at 298.15 K for mixtures of solvents used in themolybdenum extraction process

Choi, Y.-Y.[Young-Yoon], Hwang, I.-C.[In-Chan], Shin, S.-H.[Sang-Hong], Park, S.-J.[So-Jin]

ABSTRACT