Selective solar photocatalytic oxidation of ethylbenzene on C, N, and S doped TiO2

Selective solar photocatalytic oxidation of ethylbenzene on C, N, and S doped TiO2 The liquid-phase photo-oxidation of ethylbenzene (EB) is investigated in solar light with air/O2/N2 at atmospheric pressure, in a batch reactor using acetonitrile medium. It is carried out over TiO2 doped with C, N, and S (TCNS) photocatalyst samples. The photocatalytic oxidation yielded acetophenone (33%) and 1-phenylethanol (21%) at 56% conversion of EB during a 6-h irradiation time. This product distribution indicates that C–H bond activation has occurred only at the alkyl chain. The effects of the EB to water content ratio, amount of photocatalyst and its sustainability, pH, have been studied. It is illustrated that the reaction carried out by this environmentally friendly photocatalysis is truly heterogeneous under mild conditions using solar light and no waste generation. An optimum loading of TCNS5 was observed for the photo-oxidation of EB. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Selective solar photocatalytic oxidation of ethylbenzene on C, N, and S doped TiO2

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Publisher
Springer Netherlands
Copyright
Copyright © 2011 by Springer Science+Business Media B.V.
Subject
Chemistry; Inorganic Chemistry; Catalysis; Physical Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-011-0298-7
Publisher site
See Article on Publisher Site

Abstract

The liquid-phase photo-oxidation of ethylbenzene (EB) is investigated in solar light with air/O2/N2 at atmospheric pressure, in a batch reactor using acetonitrile medium. It is carried out over TiO2 doped with C, N, and S (TCNS) photocatalyst samples. The photocatalytic oxidation yielded acetophenone (33%) and 1-phenylethanol (21%) at 56% conversion of EB during a 6-h irradiation time. This product distribution indicates that C–H bond activation has occurred only at the alkyl chain. The effects of the EB to water content ratio, amount of photocatalyst and its sustainability, pH, have been studied. It is illustrated that the reaction carried out by this environmentally friendly photocatalysis is truly heterogeneous under mild conditions using solar light and no waste generation. An optimum loading of TCNS5 was observed for the photo-oxidation of EB.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Mar 9, 2011

References

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