A green route for selective synthesis of styrene from ethylbenzene by means of a photocatalytic system

A green route for selective synthesis of styrene from ethylbenzene by means of a photocatalytic... Photoassisted catalysis is a novel and attractive means of obtaining value-added chemicals. Photocatalytic reactions occur on the surface of photocatalyst particles and, as a consequence, it is necessary to maximize exposure of the catalyst to the radiation. Irradiation efficiency can be improved by using a fluidized bed to enhance photon and mass transfer; compared with fixed-bed reactors this results in better use of irradiation and favours adsorption and desorption phenomena between reactants and photocatalysts. In this work formation of styrene from ethylbenzene was investigated on sulfated MoO x /γ-Al2O3 catalysts in a gas–solid bi-dimensional photocatalytic fluidized-bed reactor with high illumination efficiency. Photocatalytic tests showed that for all the catalysts the only product detected was styrene (100 % selectivity). The highest photoactivity was obtained by use of a catalyst with nominal loading 8 wt% MoO3 and 2.4 wt% SO4. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

A green route for selective synthesis of styrene from ethylbenzene by means of a photocatalytic system

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Publisher
Springer Netherlands
Copyright
Copyright © 2012 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-012-0931-0
Publisher site
See Article on Publisher Site

Abstract

Photoassisted catalysis is a novel and attractive means of obtaining value-added chemicals. Photocatalytic reactions occur on the surface of photocatalyst particles and, as a consequence, it is necessary to maximize exposure of the catalyst to the radiation. Irradiation efficiency can be improved by using a fluidized bed to enhance photon and mass transfer; compared with fixed-bed reactors this results in better use of irradiation and favours adsorption and desorption phenomena between reactants and photocatalysts. In this work formation of styrene from ethylbenzene was investigated on sulfated MoO x /γ-Al2O3 catalysts in a gas–solid bi-dimensional photocatalytic fluidized-bed reactor with high illumination efficiency. Photocatalytic tests showed that for all the catalysts the only product detected was styrene (100 % selectivity). The highest photoactivity was obtained by use of a catalyst with nominal loading 8 wt% MoO3 and 2.4 wt% SO4.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Nov 30, 2012

References

  • Photocatalysis with organized systems for the oxofunctionalization of hydrocarbons by O2
    Maldotti, A; Molinari, A; Amadelli, R
  • Structured catalysts for photo-Fenton oxidation of acetic acid
    Sannino, D; Vaiano, V; Ciambelli, P; Isupova, LA
  • A step forwards in ethanol selective photo-oxidation
    Ciambelli, P; Sannino, D; Palma, V; Vaiano, V; Mazzei, RS
  • Layered zirconium-tin phosphates.2. catalytic properties in the oxydehydrogenation of ethylbenzene to styrene
    Bagnasco, G; Ciambelli, P; Turco, M; Laginestra, A; Patrono, P

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