ABSTRACT

The solubility of adamantane was measured in eight phosphonium-based ionic liquids (ILs) having cations with different alkyl chain lengths, namely, tributyl(methyl)phosphonium, triisobutyl(methyl)phosphonium, tetraoctylphosphonium, and tetradecyltrihexylphosphonium, combined with several anions, namely, bromide, chloride, dicyanamide, methanesulfonate, methylsulfate, bistriflamide, and tosylate. The experimental measurements were carried over the temperature range from (380 to 463) K and at pressures close to 0.1 MPa. The solubility of adamantane was shown to be essentially dependent on the alkyl chain length of the IL cation and, to a lesser extent, on the nature of the IL anion. In general, higher solubilities of adamantane were observed with ILs presenting more hydrophobic character.

Compounds

#	Formula	Name
1	C10H16	adamantane
2	C20H37O3PS	triisobutylmethylphosphonium p-toluenesulfonate
3	C32H68ClP	trihexyl(tetradecyl)phosphonium chloride
4	C34H68F6NO4PS2	trihexyl(tetradecyl)phosphonium bis[(trifluoromethyl)sulfonyl]imide
5	C32H68BrP	tetradecyltrihexylphosphonium bromide
6	C33H71O3PS	trihexyltetradecylphosphonium methanesulfonate
7	C34H68N3P	tetradecyl(trihexyl)phosphonium dicyanamide
8	C32H68BrP	tetraoctylphosphonium bromide
9	C14H33O4PS	tributylmethylphosphonium methyl sulfate

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 9	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	7
POMD	1 2	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	5
POMD	1 3	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	3
POMD	1 4	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	3
POMD	1 5	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	3
POMD	1 6	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	3
POMD	1 7	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	3
POMD	1 8	Solid-liquid equilibrium temperature, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Crystal - 1	VISOBS	5

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Solubility of Adamantane in Phosphonium-Based Ionic Liquids

Oliveira, F. S.[Filipe S.], Freire, M. G.[Mara G.], Pratas, M. J.[Maria J.], Pauly, J.[Jerome], Daridon, J. L.[Jean L.], Marrucho, I. M.[Isabel M.], Coutinho, J. A. P.[Joao A. P.]

ABSTRACT