Measurement and Prediction of the Thermal Conductivity of Tricyanomethanide- and Tetracyanoborate-Based Imidazolium Ionic Liquids

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Koller TM, Schmid S, Sachnov S, Rausch MH, Wasserscheid P, Fröba AP
Zeitschrift: International Journal of Thermophysics
Verlag: Springer Verlag (Germany)
Jahr der Veröffentlichung: 2014
Band: 35
Seitenbereich: 195-217
ISSN: 0195-928X
Sprache: Englisch


Abstract


The thermal conductivity of ten ionic liquids (ILs) based on the anions [C(CN)(3)](-) (tricyanomethanide) and [B(CN)(4)](-) (tetracyanoborate) carrying a homologous series of the [alkyl-MIM](+) (1-alkyl-3-methylimidazolium) cations [EMIM](+) (ethyl), [BMIM](+) (butyl) [HMIM](+) (hexyl), [OMIM](+) (octyl), [DMIM](+) (decyl) was measured by a steady-state guarded parallel-plate instrument in the temperature range between (283.15 and 353.15) K at atmospheric pressure with a total uncertainty of 5 % (k = 2). Furthermore, the refractive index required for data evaluation and the density, which is an important property in the developed prediction method for the thermal conductivity, were determined. In general, the measured thermal conductivities of the probed ILs decrease with increasing temperature and increasing alkyl-chain length of the cation. Regarding the influence of the anion, somewhat smaller values for the [B(CN)(4)](-)-based ILs compared to the [C(CN)(3)](-)-based ILs carrying the same cation are observed. Our previously developed simple prediction method for the thermal conductivity of ILs at 293.15K using only information on the molar mass and the density could be improved. By the combination of this approach with the temperature dependence of the density, an extended empirical correlation additionally describing the temperature dependence of the thermal conductivity of ILs is recommended. This correlation represents all experimental thermal-conductivity data in the literature with a standard deviation of less than 7 %.



FAU-Autoren / FAU-Herausgeber

Fröba, Andreas Paul Prof. Dr.-Ing.
Professur für Advanced Optical Technologies - Thermophysical Properties
Koller, Thomas Manfred Dr.-Ing.
Professur für Advanced Optical Technologies - Thermophysical Properties
Rausch, Michael Heinrich Dr.-Ing.
Lehrstuhl für Technische Thermodynamik
Sachnov, Swetlana
Lehrstuhl für Chemische Reaktionstechnik
Schmid, Stefan
Lehrstuhl für Elektronische Bauelemente
Wasserscheid, Peter Prof. Dr.
Lehrstuhl für Chemische Reaktionstechnik


Zusätzliche Organisationseinheit(en)
Erlangen Graduate School in Advanced Optical Technologies


Zitierweisen

APA:
Koller, T.M., Schmid, S., Sachnov, S., Rausch, M.H., Wasserscheid, P., & Fröba, A.P. (2014). Measurement and Prediction of the Thermal Conductivity of Tricyanomethanide- and Tetracyanoborate-Based Imidazolium Ionic Liquids. International Journal of Thermophysics, 35, 195-217. https://dx.doi.org/10.1007/s10765-014-1617-1

MLA:
Koller, Thomas Manfred, et al. "Measurement and Prediction of the Thermal Conductivity of Tricyanomethanide- and Tetracyanoborate-Based Imidazolium Ionic Liquids." International Journal of Thermophysics 35 (2014): 195-217.

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Zuletzt aktualisiert 2018-13-07 um 07:23