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Adsorption of 2-Chlorophenol on the surface of silica- and Alumina-Supported iron oxide: An FTIR and XPS study

Mosallanejad, S., Dlugogorski, B.Z., Kennedy, E.M. and Stockenhuber, M. (2017) Adsorption of 2-Chlorophenol on the surface of silica- and Alumina-Supported iron oxide: An FTIR and XPS study. ChemCatChem, 9 (3). pp. 481-491.

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Link to Published Version: http://dx.doi.org/10.1002/cctc.201601069
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Abstract

The adsorption of 2-chlorophenol (2-CPh) on the surface of silica, alumina and silica- and alumina-supported iron oxides was examined at 30 and 250 °C. The formation of a chlorophenolate carbanion/chlorophenoxy radical intermediate on the surface of silica and alumina surfaces is identified by using in situ FTIR spectroscopy. The IR spectra of 2-CPh adsorbed on supported iron oxide at 250 °C highlight significant differences in the adsorption complex between 2-CPh and the two supported iron oxides (on silica and alumina). Under conditions of the low coverage of 2-CPh on the surface of these catalysts, FTIR spectroscopy was used to indicate that the adsorption of 2-CPh on the surface of silica-supported iron oxide commences with the formation of a chlorophenolate species, whereas 2-CPh creates a surface formate species on alumina-supported iron oxide. Moreover, the strong bonds of 2-CPh and a high concentration of the carbonate species are evident on the alumina surfaces by using both FTIR and X-ray photoelectron spectroscopy.

Item Type: Journal Article
Murdoch Affiliation(s): School of Engineering and Information Technology
Publisher: Wiley
Copyright: © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
URI: http://researchrepository.murdoch.edu.au/id/eprint/35168
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