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Catalysis Letters

, Volume 131, Issue 1–2, pp 164–169 | Cite as

Reactivity of LaNi1−y Co y O3−δ Perovskite Systems in the Deep Oxidation of Toluene

  • R. Pereñíguez
  • J. L. Hueso
  • J. P. Holgado
  • F. Gaillard
  • A. Caballero
Article

Abstract

In the present work we have evaluated the oxidation of toluene over different lanthanum perovskites with a general composition of LaNi1−y Co y O3−δ. These catalysts, prepared by a spray pyrolysis method, have been characterised by XRD, BET and FE-SEM techniques. Additional experiments of temperature programmed desorption of O2, reduction in H2 and X-ray absorption spectroscopy were also performed in order to identify the main surface oxygen species and the reducibility of the different perovskites. The catalytic behaviour toward the oxidation of toluene (as a model for VOCs compounds) was evaluated in the range 100–600 °C, detecting a total conversion for all the samples below 400 °C and higher activities for the cobalt-containing perovskites. The catalytic behaviour of these samples is consistent with a suprafacial mechanism, with the α-type oxygen playing an active role in the oxidation reaction.

Keywords

Perovskites Toluene Oxidation VOCs TPR TPD XAS 

Notes

Acknowledgments

We thank the Ministry of Science and Education of Spain for financial support (Projects ENE2004-01660 and ENE2007-67926-C02-01). We also thank the staff of the ESRF BM25 beamline and ESRF facility (Grenoble, France) for funding and helping to accomplish part of these experiments.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • R. Pereñíguez
    • 1
  • J. L. Hueso
    • 1
  • J. P. Holgado
    • 1
  • F. Gaillard
    • 2
    • 3
  • A. Caballero
    • 1
  1. 1.Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de SevillaCSIC, Universidad de SevillaSevilleSpain
  2. 2.IRCELYON, Institut de recherches sur la catalyse et l′environnement de LyonCNRS, UMR5256VilleurbanneFrance
  3. 3.Université de LyonVilleurbanneFrance

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