Koller TM, Rausch MH, Schulz P, Berger M, Wasserscheid P, Economou IG, Leipertz A, Fröba AP (2012)
Publication Type: Journal article, Original article
Subtype: other
Publication year: 2012
Publisher: American Chemical Society
Book Volume: 57
Pages Range: 828-835
Journal Issue: 3
Thermophys. properties of the ionic liq. (IL) [EMIM][B(CN)4] (1-ethyl-3-methylimidazolium tetracyanoborate) were investigated both by conventional techniques and by surface light scattering (SLS) at atm. pressure. The d. was measured between (283.15 and 363.15) K with a vibrating U-tube densimeter. An Abbe refractometer was used for the measurement of the refractive index in the range from (283.15 to 313.15) K. Self-diffusion coeffs. for the cation and anion were measured by NMR spectroscopy from (273.15 to 318.15) K. The interfacial tension was obtained from the pendant drop technique at 297.04 K. Based on this datum and the temp. dependence of d., the interfacial tension for all relevant temps. was estd. via an appropriate prediction model. For the IL studied within the present work, the quantity directly accessible by SLS at low temps. was the ratio of dynamic viscosity to interfacial tension. Combining the results from SLS with the d. and interfacial tension data obtained from conventional methods, the dynamic viscosity could be detd. from (283.15 to 303.15) K. For higher temps., SLS measurements combined with the results for d. allowed the simultaneous detn. of dynamic viscosity and interfacial tension from (313.15 to 363.15) K. Besides a comparison with literature data for [EMIM][B(CN)4], the influence of variation of the anion in [EMIM]-based ILs on thermophys. properties is discussed. It could be shown that the thermophys. properties of [EMIM][B(CN)4] are mainly affected by the distinct charge delocalization in the anion. [on SciFinder(R)]
APA:
Koller, T.M., Rausch, M.H., Schulz, P., Berger, M., Wasserscheid, P., Economou, I.G.,... Fröba, A.P. (2012). Viscosity, Interfacial Tension, Self-Diffusion Coefficient, Density, and Refractive Index of the Ionic Liquid 1-Ethyl-3-methylimidazolium Tetracyanoborate as a Function of Temperature at Atmospheric Pressure. Journal of Chemical and Engineering Data, 57(3), 828-835.
MLA:
Koller, Thomas Manfred, et al. "Viscosity, Interfacial Tension, Self-Diffusion Coefficient, Density, and Refractive Index of the Ionic Liquid 1-Ethyl-3-methylimidazolium Tetracyanoborate as a Function of Temperature at Atmospheric Pressure." Journal of Chemical and Engineering Data 57.3 (2012): 828-835.
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