Conductivity of ionic liquids in mixtures

Jarosik, Anna; Krajewski, Sebastian R.; Lewandowski, Andrzej; Radzimski, Przemysław

doi:10.1016/j.molliq.2005.06.001

Cited by 200 publications

(167 citation statements)

References 43 publications

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“…At water concentrations above that of the conductivity maximum, the effect of dilution by water is predominant. This shape of curve is classically observed for mixtures binary of ionic liquids with molecular solvents [27,28].…”

Section: [Pyrr][hcoo] (3); [Dipea][hcoo] (4); [Amil][hcoo] (5); [Qui]supporting

confidence: 57%

Transport properties of protic ionic liquids, pure and in aqueous solutions: Effects of the anion and cation structure

Anouti

Jacquemin

Lemordant

2010

Fluid Phase Equilibria

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Transport properties of protic ionic liquids, pure and in aqueous solutions: Effects of the anion and cation structure Anouti, M., Jacquemin, J., & Lemordant, D. (2010). Transport properties of protic ionic liquids, pure and in aqueous solutions: Effects of the anion and cation structure. Fluid Phase Equilibria, 297(1), [13][14][15][16][17][18][19][20][21][22] COO] with n = 5-8. This study was performed in order to investigate the influence of molecular structures of the ions on the ionic conductivities in aqueous solutions. The ionic conductivities of the aqueous solutions are 2-30 times higher than the conductivities of pure PILs. The maximum in conductivity varies from w w = 0.41 to 0.74 and is related to the nature of cations and anions. The molar conductance and the molar conductance at infinite dilution for (PIL + water) solutions are then determined. Self-diffusion coefficients of the twelve protic ionic liquids in water at infinite dilution and at 298.15 K are calculated by using the Nernst-Haskell, the original and the modified Wilke-Chang equations. These calculations show that similar values are obtained using the modified Wilke-Chang and the Nernst-Haskell equations. Finally, the effective hydrodynamic (or Stokes) radius of the PILs was determined by using the Stokes-Einstein equation. A linear relationship was established in order to predict this radius as a function of the anion alkyl chain length in the case of the pyrrolidinium alkylcarboxylates PILs.

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Section: [Pyrr][hcoo] (3); [Dipea][hcoo] (4); [Amil][hcoo] (5); [Qui]supporting

confidence: 57%

Transport properties of protic ionic liquids, pure and in aqueous solutions: Effects of the anion and cation structure

Anouti

Jacquemin

Lemordant

2010

Fluid Phase Equilibria

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“…According to the theory of Dupont [25], when the concentration of imidazolium ionic liquid is substantially smaller than that of the organic solvent, solvent-separated ion pairs of ionic liquid can be formed. The increasing of k obs with V RTIL before the critical point can be explained by the quenching of 3 Because RTIL are entirely composed of special organic cations and anions, electrical conductivity change can indicate the phase transformation of RTIL/organic mixed solutions [25,26]. We measured the electrical conductivity of the binary mixtures to clarify whether there is phase transformation in our case.…”

Section: Effect Of Rtil/organic Ratio On the Reaction Rate Constantmentioning

confidence: 91%

Laser photolysis study of anthraquinone in binary mixtures ofionic liquid [bmim][PF6] and organic solvent

Zhu

et al. 2006

IJMS

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Photochemical properties of the ionic liquid (RTIL) 1-butyl-3-methylimidazolium hexafluorophosphate [bmim] [PF 6 ] and its binary mixed solutions with organic solvent (DMF and MeCN) were investigated by laser photolysis at an excitation wavelength of 355 nm, using anthraquinone (AQ) as a probe molecule. It was indicated that the triplet excited state of AQ ( 3 AQ*) can abstract hydrogen from [bmim] [PF 6 ]. Moreover, along with the change of the ratio of RTIL and organic solvent, the reaction rate constant changes regularly. Critical points were observed at volume fraction V RTIL = 0.2 for RTIL/MeCN and V RTIL = 0.05 for RTIL/DMF. For both systems, before the critical point, the rate constant increases rapidly with increasing V RTIL ; however, it decreases obviously with V RTIL after the critical point. We conclude that the concentration dependence is dominant at lower V RTIL , while the viscosity and phase transformation are dominant at higher V RTIL for the effect of ionic liquid on the decay of rate constant.

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“…Ionic liquids have superior electrochemical stability compared to both aqueous and organic electrolytes and can withstand 4-10 V. [50][51] Furthermore, they exhibit good ionic conductivity [52] and because they have no hydration shell, high values of capacitance can be achieved in nanoporous electrodes. [53] The limiting factor for using ionic liquids in various commercial device applications is their relatively high price.…”

Section: Electrolytesmentioning

confidence: 99%

Flexible and Cellulose-based Organic Electronics

Edberg

2017

Linköping Studies in Science and Technology. Dissertations

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Conductivity of ionic liquids in mixtures

Cited by 200 publications

References 43 publications

Transport properties of protic ionic liquids, pure and in aqueous solutions: Effects of the anion and cation structure

Transport properties of protic ionic liquids, pure and in aqueous solutions: Effects of the anion and cation structure

Laser photolysis study of anthraquinone in binary mixtures ofionic liquid [bmim][PF6] and organic solvent

Flexible and Cellulose-based Organic Electronics

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