Thermal Conductivity of Ionic Liquids: Measurement and Prediction

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Fröba AP, Rausch MH, Krzeminski K, Assenbaum D, Wasserscheid P, Leipertz A
Zeitschrift: International Journal of Thermophysics
Verlag: Springer Verlag (Germany)
Jahr der Veröffentlichung: 2010
Band: 31
Heftnummer: 11-12
Seitenbereich: 2059--2077
ISSN: 0195-928X
Sprache: Englisch


Abstract


This study reports thermal-conductivity data for a series of [EMIM] (1-ethyl-3-methylimidazolium)-based ionic liquids (ILs) having the anions [NTf2] (bis(trifluoromethylsulfonyl)imide), [OAc] (acetate), [N(CN)2] (dicyanimide), [C(CN)3] (tricyanomethide), [MeOHPO2] (methylphosphonate), [EtSO4] (ethylsulfate), or [OcSO4] (octylsulfate), and in addition for ILs with the [NTf2]-anion having the cations [HMIM] (1-hexyl-3-methylimidazolium), [OMA] (methyltrioctylammonium), or [BBIM] (1,3-dibutylimidazolium). Measurements were performed in the temperature range between (273.15 and 333.15) K by a stationary guarded parallelplate instrument with a total measurement uncertainty of 3{\%}(k = 2). For all ILs, the temperature dependence of the thermal conductivity can well be represented by a linear temperature dependence of the thermal conductivity can well be represented by a linear equation. While for the [NTf2]-based ILs, a slight increase of the thermal conductivity with increasingmolar mass of the cation is found at a given temperature, the [EMIM]based ILs show a pronounced, approximately linear decrease with increasing molar mass of the different probed anions. Based on the experimental data obtained in this study, a simple relationship between the thermal conductivity,molar mass, and density is proposed for the prediction of the thermal-conductivity data of ILs. For this, also densities were measured for [EMIM][OAc], [EMIM][C(CN)3], and [HMIM][NTf2]. Themean absolute percentage deviation of all thermal-conductivity data for ILs found in the literature from the proposed prediction is about 7 {\%}. This result represents a convenient simplification in the acquisition of thermal conductivity information for the enormous amount of structurally different IL cation/anion combinations available.



FAU-Autoren / FAU-Herausgeber

Fröba, Andreas Paul Prof. Dr.-Ing.
Professur für Advanced Optical Technologies - Thermophysical Properties
Leipertz, Alfred Prof. Dr.-Ing.
Lehrstuhl für Technische Thermodynamik
Rausch, Michael Heinrich Dr.-Ing.
Lehrstuhl für Technische Thermodynamik
Wasserscheid, Peter Prof. Dr.
Lehrstuhl für Chemische Reaktionstechnik


Zusätzliche Organisationseinheit(en)
Erlangen Graduate School in Advanced Optical Technologies
Exzellenz-Cluster Engineering of Advanced Materials


Zitierweisen

APA:
Fröba, A.P., Rausch, M.H., Krzeminski, K., Assenbaum, D., Wasserscheid, P., & Leipertz, A. (2010). Thermal Conductivity of Ionic Liquids: Measurement and Prediction. International Journal of Thermophysics, 31(11-12), 2059--2077. https://dx.doi.org/10.1007/s10765-010-0889-3

MLA:
Fröba, Andreas Paul, et al. "Thermal Conductivity of Ionic Liquids: Measurement and Prediction." International Journal of Thermophysics 31.11-12 (2010): 2059--2077.

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Zuletzt aktualisiert 2018-11-08 um 02:31