Simultaneous Measurement of Speed of Sound, Thermal Diffusivity, and Bulk Viscosity of 1-Ethyl-3-methylimidazolium-Based Ionic Liquids Using Laser-Induced Gratings

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Kozlov D, Kiefer J, Seeger T, Fröba AP, Leipertz A
Zeitschrift: Journal of Physical Chemistry B
Verlag: American Chemical Society
Jahr der Veröffentlichung: 2014
Band: 118
Seitenbereich: 14493-14501
ISSN: 1520-6106
eISSN: 1520-5207
Sprache: Englisch


Abstract


The technique of laser-induced gratings (LIGs) has been applied to the simultaneous determination of speed of sound and thermal diffusivity of four 1-ethyl-3-methylimidazolium ([EMIm])-based room temperature ionic liquids (RTILs)-[EMIm][N(CN)(2)], [EMIm][MeSO3], [EMIm][C(CN)(3)], and [EMIm][NTf2]-at ambient pressure (1 bar (0.1 MPa)) and temperature (28 degrees C (301 K)). Transient laser-induced gratings were created as a result of thermalization of a quasi-resonant excitation of highly lying combinational vibrational states of the RTIL molecules and electrostrictive compression of the liquid by radiation of a pulse-repetitive Q-switched Nd:YAG pump laser (1064 nm). The LIGs temporal evolution was recorded using Bragg diffraction of the radiation from a continuous-wave probe laser (532 nm). By fitting the temporal profiles of the LIG signals, the speed of sound and thermal diffusivity were determined, and the isentropic compressibility and thermal conductivity were calculated. Independently, the special experimental arrangement allowed the measurement of the damping of the laser-excited acoustic waves and the derivation of the RTIL bulk viscosity for the first time.



FAU-Autoren / FAU-Herausgeber

Fröba, Andreas Paul Prof. Dr.-Ing.
Lehrstuhl für Advanced Optical Technologies - Thermophysical Properties
Leipertz, Alfred Prof. Dr.-Ing.
Technische Fakultät
Seeger, Thomas Prof. Dr.-Ing.
Lehrstuhl für Technische Thermodynamik


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


Autor(en) der externen Einrichtung(en)
Russian Academy of Sciences / Росси́йская акаде́мия нау́к (RAS)


Zitierweisen

APA:
Kozlov, D., Kiefer, J., Seeger, T., Fröba, A.P., & Leipertz, A. (2014). Simultaneous Measurement of Speed of Sound, Thermal Diffusivity, and Bulk Viscosity of 1-Ethyl-3-methylimidazolium-Based Ionic Liquids Using Laser-Induced Gratings. Journal of Physical Chemistry B, 118, 14493-14501. https://dx.doi.org/10.1021/jp510186x

MLA:
Kozlov, Dimitrii, et al. "Simultaneous Measurement of Speed of Sound, Thermal Diffusivity, and Bulk Viscosity of 1-Ethyl-3-methylimidazolium-Based Ionic Liquids Using Laser-Induced Gratings." Journal of Physical Chemistry B 118 (2014): 14493-14501.

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Zuletzt aktualisiert 2018-11-08 um 03:10