Diffusion Coefficients of Imidazolium Based Ionic Liquids in Aqueous Solutions |
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Authors: | A Heintz J K Lehmann E Schmidt A Wandschneider |
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Institution: | (1) Department of Physical Chemistry, University of Rostock, Rostock, Germany |
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Abstract: | Diffusion coefficients of the ionic liquids C2MIM]EtSO4], C4MIM]OcSO4], C2MIM]NTf2] and C4MIM]NTf2] in water at high dilution have been measured using the Taylor dispersion technique. Data on the diffusion coefficients have
been obtained for each solute at six temperatures between 288 and 313 K. The data have been fitted by the Arrhenius equation
and activation energies of diffusion have been determined. Effective radii of the ionic liquid molecules have also been obtained
using the Stokes–Einstein relationship. |
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Keywords: | Ionic liquids Diffusion coefficients Taylor-dispersion technique |
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