Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Eutectic mixtures of pyrrolidinium-based ionic liquids

Stolarska, O.[Olga], Rodriguez, H.[Hector], Smiglak, M.[Marcin]
Fluid Phase Equilib. 2016, 408, 1-9
ABSTRACT
The solid-liquid equilibria of five systems consisting of different pairs of pyrrolidiniumbased ionic liquids were investigated. For all five tested systems the solid-liquid phase behaviour was found to be of eutectic type, and the eutectic compositions and temperatures were determined. Additional experiments were carried out to determine thermal stability of the resulting mixtures in comparison to the corresponding parent salts. Compared to the latter, melting point depression of the eutectic mixtures as large as 151 K are achievable for the system [C2MPyrr][NTf2] + [C4MPyrr][BF4]. At the same time, this is the first detailed analysis of eutectic mixture of ionic liquids involving four different ions that is reported in the literature.
Compounds
# Formula Name
1 C9H20ClN 1-butyl-1-methylpyrrolidinium chloride
2 C9H20BrN 1-butyl-1-methylpyrrolidinium bromide
3 C9H20BF4N 1-butyl-1-methylpyrrolidinium tetrafluoroborate
4 C9H16F6N2O4S2 1-ethyl-1-methylpyrrolidinium bis[(trifluoromethyl)sulfonyl]imide
5 C7H16BF4N 1-ethyl-1-methylpyrrolidinium tetrafluoroborate
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
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 1
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 2
  • Normal melting temperature, K ; Crystal 1
  • Crystal 1
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 2
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 3
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 3
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 4
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 5
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 2
  • 1
  • Eutectic temperature, K ; Crystal - 2
  • Crystal - 2
  • Crystal - 1
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 2
  • 1
  • Eutectic composition: mole fraction - 2 ; Crystal - 2
  • Crystal - 2
  • Crystal - 1
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 2
  • 1
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • DTA
  • 4
  • POMD
  • 2
  • 1
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 2; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal 1 - 2
  • DTA
  • 7
  • POMD
  • 2
  • 3
  • Eutectic temperature, K ; Crystal - 2
  • Crystal - 2
  • Crystal - 3
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 2
  • 3
  • Eutectic composition: mole fraction - 3 ; Crystal - 2
  • Crystal - 2
  • Crystal - 3
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 2
  • 3
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 2
  • DTA
  • 6
  • POMD
  • 2
  • 3
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • DTA
  • 5
  • POMD
  • 3
  • 1
  • Eutectic temperature, K ; Crystal - 3
  • Crystal - 3
  • Crystal - 1
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 3
  • 1
  • Eutectic composition: mole fraction - 3 ; Crystal - 3
  • Crystal - 3
  • Crystal - 1
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 3
  • 1
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • DTA
  • 6
  • POMD
  • 3
  • 1
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • DTA
  • 5
  • POMD
  • 5
  • 4
  • Eutectic temperature, K ; Crystal - 5
  • Crystal - 5
  • Crystal - 4
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 5
  • 4
  • Eutectic composition: mole fraction - 5 ; Crystal - 5
  • Crystal - 5
  • Crystal - 4
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 5
  • 4
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 5; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 4
  • DTA
  • 4
  • POMD
  • 5
  • 4
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 5; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 5
  • DTA
  • 6
  • POMD
  • 4
  • 3
  • Eutectic temperature, K ; Crystal - 4
  • Crystal - 4
  • Crystal - 3
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 4
  • 3
  • Eutectic composition: mole fraction - 3 ; Crystal - 4
  • Crystal - 4
  • Crystal - 3
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 4
  • 3
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 4
  • DTA
  • 5
  • POMD
  • 4
  • 3
  • Solid-liquid equilibrium temperature, K ; Liquid
  • Mole fraction - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 3
  • DTA
  • 5