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Effect of the Incorporation Order of Pt- and Ba-Precursors on the Structure and Catalytic Performance of NSR Catalysts

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Abstract

The structural properties and the performance of two NO X storage-reduction (NSR) catalysts prepared as a function of the deposition order of Pt- and Ba-precursors was investigated. The catalyst obtained by incorporating first Ba turned out to be more active mainly due to the larger regeneration extent achieved at temperatures below 350 °C. This behaviour was related to the larger external Pt/Ba interface exhibited by this catalyst.

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Acknowledgements

The authors wish to thank Departamento de Educación, Universidades e Investigación del Gobierno Vasco (BFI05.258), Diputación Foral de Bizkaia (DIPE07/11), and Ministerio de Ciencia y Tecnología (CTQ2006-15079) for their financial support. The authors also thank S. Bernal, J.J. Delgado and J. J. Calvino (Universidad de Cádiz) for electron microscopy investigations.

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Authors and Affiliations

  1. Chemical Technologies for Environmental Sustainability Group, Department of Chemical Engineering, Faculty of Science and Technology, Universidad del País Vasco/EHU, P.O. Box 644, 48080, Bilbao, Spain

    U. Elizundia, R. López-Fonseca, M. A. Gutiérrez-Ortiz & J. R. González-Velasco

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  1. U. Elizundia
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  2. R. López-Fonseca
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  3. M. A. Gutiérrez-Ortiz
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  4. J. R. González-Velasco
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Correspondence to R. López-Fonseca.

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Elizundia, U., López-Fonseca, R., Gutiérrez-Ortiz, M.A. et al. Effect of the Incorporation Order of Pt- and Ba-Precursors on the Structure and Catalytic Performance of NSR Catalysts. Top Catal 52, 1808–1812 (2009). https://doi.org/10.1007/s11244-009-9357-3

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  • DOI: https://doi.org/10.1007/s11244-009-9357-3

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