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Catalysis Letters

, Volume 144, Issue 1, pp 22–31 | Cite as

Effect of Enhanced Support Acidity on the Sulfate Storage and the Activity of Pt/γ-Al2O3 for NO Oxidation and Propylene Oxidation

  • Xavier P. Auvray
  • Louise OlssonEmail author
Article

Abstract

NO oxidation and propylene oxidation were studied on standard and acidity-enhanced Pt/Al2O3 catalyst. Deactivation by platinum oxide formation was suppressed by the presence of chlorine and sulfates. After a long SO2 exposure, the activity of modified catalysts was higher than the standard catalyst. The aged chlorinated sample showed the best propylene oxidation activity while the sulfated one exhibited the best NO conversion.

Graphical Abstract

Keywords

Hysteresis Chlorinated catalyst Desulfation Ageing Deactivation DOC Promotion TPR 

Notes

Acknowledgments

The funding from the Swedish Foundation for Strategic Research (F06-0006) and Swedish Energy agency is acknowledged. This work was carried out at the Competence Centre for Catalysis, Chalmers University of Technology. KCK is financially supported by Chalmers University of Technology, the Swedish Energy Agency and the member companies: AB Volvo, Volvo Car Corporation, Scania CV AB, Haldor Topsoe A/S and ECAPS AB.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Chemical Engineering; Competence Centre for CatalysisChalmers University of TechnologyGöteborgSweden

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