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NMR and IR study of fluorobenzene and hexafluorobenzene adsorbed on alumina

Budarin, V.L., Clark, J.H., Hale, S.E. and Tavener, S.J. (2007) NMR and IR study of fluorobenzene and hexafluorobenzene adsorbed on alumina. Langmuir, 23 (10). pp. 5412-5418. ISSN 0743-7463

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Abstract

The adsorption of fluorobenzene (C6H5F) and hexafluorobenzene (C6F6) onto the surface of neutral alumina is investigated by reflectance IR spectroscopy, near-IR spectroscopy, and measurement of 19F NMR chemical shift values. Chemical shifts are dependent on surface coverage and reveal multiple peaks where different adsorption environments occur. C6H5F appears to be adsorbed through polar interactions with surface hydroxyls, whereas C6F6 shows separate resonances for the first layer of coverage and outer layers. Available surface areas are estimated, and reorientation of adsorbed hexafluorobenzene is proposed to account for chemical shift behavior and differences between calculated and measured monolayer coverage.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Chemistry (York)
Depositing User: York RAE Import
Date Deposited: 02 Apr 2009 16:12
Last Modified: 02 Apr 2009 16:12
Published Version: http://dx.doi.org/10.1021/la062900k
Status: Published
Publisher: ACS American Chemical Society
Identification Number: 10.1021/la062900k
URI: http://eprints.whiterose.ac.uk/id/eprint/6953

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