Advanced search
1 file | 1.10 MB Add to list

Ionic liquid ion exchange : exclusion from strong interactions condemns cations to the most weakly interacting anions and dictates reaction equilibrium

Pieter Naert (UGent) , Korneel Rabaey (UGent) and Christian Stevens (UGent)
(2018) GREEN CHEMISTRY. 20(18). p.4277-4286
Author
Organization
Abstract
It is well-known that for a fixed ionic liquid cation, variation of the anion determines the physicochemical properties and the activity as solvent or catalyst. Although ion exchange is an acknowledged phenomenon, it is often overlooked in ionic liquid applications due to a lacking framework. We propose here a framework to describe and predict ionic liquid ion exchange with a gain in interaction energy as driving force. The low charge density ionic liquid cations display low interaction energies and are condemned to pair with the most weakly interacting anions in the system, after all stronger interactions have formed. This is demonstrated both for phosphonium and imidazolium ionic liquids, with and without hydration effects. The importance on processing is exemplified by esterification, in which the degree of exchange of carboxylic acid for carboxylate and the availability of protons determines the conversion.
Keywords
AQUEOUS BIPHASIC SYSTEMS, INTERACTION STRENGTH, INTERACTION ENERGIES, ROOM-TEMPERATURE, ALKYL-HALIDES, SALTS, WATER, ESTERIFICATION, SPECTROSCOPY, SOLUBILITIES

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 1.10 MB

Citation

Please use this url to cite or link to this publication:

MLA
Naert, Pieter, Korneel Rabaey, and Christian Stevens. “Ionic Liquid Ion Exchange : Exclusion from Strong Interactions Condemns Cations to the Most Weakly Interacting Anions and Dictates Reaction Equilibrium.” GREEN CHEMISTRY 20.18 (2018): 4277–4286. Print.
APA
Naert, P., Rabaey, K., & Stevens, C. (2018). Ionic liquid ion exchange : exclusion from strong interactions condemns cations to the most weakly interacting anions and dictates reaction equilibrium. GREEN CHEMISTRY, 20(18), 4277–4286.
Chicago author-date
Naert, Pieter, Korneel Rabaey, and Christian Stevens. 2018. “Ionic Liquid Ion Exchange : Exclusion from Strong Interactions Condemns Cations to the Most Weakly Interacting Anions and Dictates Reaction Equilibrium.” Green Chemistry 20 (18): 4277–4286.
Chicago author-date (all authors)
Naert, Pieter, Korneel Rabaey, and Christian Stevens. 2018. “Ionic Liquid Ion Exchange : Exclusion from Strong Interactions Condemns Cations to the Most Weakly Interacting Anions and Dictates Reaction Equilibrium.” Green Chemistry 20 (18): 4277–4286.
Vancouver
1.
Naert P, Rabaey K, Stevens C. Ionic liquid ion exchange : exclusion from strong interactions condemns cations to the most weakly interacting anions and dictates reaction equilibrium. GREEN CHEMISTRY. 2018;20(18):4277–86.
IEEE
[1]
P. Naert, K. Rabaey, and C. Stevens, “Ionic liquid ion exchange : exclusion from strong interactions condemns cations to the most weakly interacting anions and dictates reaction equilibrium,” GREEN CHEMISTRY, vol. 20, no. 18, pp. 4277–4286, 2018.
@article{8579085,
  abstract     = {It is well-known that for a fixed ionic liquid cation, variation of the anion determines the physicochemical properties and the activity as solvent or catalyst. Although ion exchange is an acknowledged phenomenon, it is often overlooked in ionic liquid applications due to a lacking framework. We propose here a framework to describe and predict ionic liquid ion exchange with a gain in interaction energy as driving force. The low charge density ionic liquid cations display low interaction energies and are condemned to pair with the most weakly interacting anions in the system, after all stronger interactions have formed. This is demonstrated both for phosphonium and imidazolium ionic liquids, with and without hydration effects. The importance on processing is exemplified by esterification, in which the degree of exchange of carboxylic acid for carboxylate and the availability of protons determines the conversion.},
  author       = {Naert, Pieter and Rabaey, Korneel and Stevens, Christian},
  issn         = {1463-9262},
  journal      = {GREEN CHEMISTRY},
  keywords     = {AQUEOUS BIPHASIC SYSTEMS,INTERACTION STRENGTH,INTERACTION ENERGIES,ROOM-TEMPERATURE,ALKYL-HALIDES,SALTS,WATER,ESTERIFICATION,SPECTROSCOPY,SOLUBILITIES},
  language     = {eng},
  number       = {18},
  pages        = {4277--4286},
  title        = {Ionic liquid ion exchange : exclusion from strong interactions condemns cations to the most weakly interacting anions and dictates reaction equilibrium},
  url          = {http://dx.doi.org/10.1039/c8gc01869c},
  volume       = {20},
  year         = {2018},
}

Altmetric
View in Altmetric
Web of Science
Times cited: