Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Unusual behavior of the isotope effect on miscibility of 1-hexyl-3-methylimidazolium bis(trifluorosulfonyl)imide with 1-alkanols

Siporska, A.[Agnieszka], Szydlowski, J.[Jerzy]
Fluid Phase Equilib. 2014, 371, 15-21
ABSTRACT
The liquid-liquid phase diagrams of 1-hexyl-3-methylimidazolium bis(trifluoromethyl)sulfonyl imide with regular and deuterated 1-alkanols (CnH2n+1OH and CnH2n+1OD, n=4-10) have been obtained. Deuteration of alcohols in the hydroxyl groups changes the upper critical solution temperatures in a very surprising way. The immiscibility region of the systems upon deuterium substitution in alcohol initially decreases (n=4,5), then significantly enlarges (n=7), and finally practically does not change (n=8-10) in comparison with the systems with nondeuterated alcohols. This is the first time when non-monotonic change of the isotope effect on miscibility with the increase of the length of the alkyl chain was observed.
Compounds
# Formula Name
1 C4H10O butan-1-ol
2 C12H19F6N3O4S2 1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide
3 C5H12O pentan-1-ol
4 C6H14O hexan-1-ol
5 C7H16O heptan-1-ol
6 C8H18O octan-1-ol
7 C9H20O nonan-1-ol
8 C10H22O decan-1-ol
9 C4H9DO n-butan(ol-d)
10 C5H11DO pentan-1-ol-d
11 C6H13DO 1-hexanol-d
12 C7H15DO 1-heptanol-d
13 C8H17DO 1-octanol-d
14 C9H19DO 1-nonanol-d
15 C10H21DO 1-decanol-d
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
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 16
  • POMD
  • 1
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 3
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 19
  • POMD
  • 3
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 4
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 15
  • POMD
  • 4
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 5
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 16
  • POMD
  • 5
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 6
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 16
  • POMD
  • 6
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 7
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 14
  • POMD
  • 7
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 8
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 14
  • POMD
  • 8
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 9
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 15
  • POMD
  • 9
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 10
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 15
  • POMD
  • 10
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 11
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 16
  • POMD
  • 11
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 12
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 14
  • POMD
  • 12
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 13
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 14
  • POMD
  • 13
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 14
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 14
  • POMD
  • 14
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1
  • POMD
  • 15
  • 2
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • VISOBS
  • 18
  • POMD
  • 15
  • 2
  • Upper consolute temperature, K ; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • from the extended scaling equation
  • 1