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Influence of the type of reducing agent (H2, CO, C3H6 and C3H8) on the reduction of stored NO X in a Pt/BaO/Al2O3 model catalyst

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Abstract

In this investigation, a comparative study for a NO X storage catalytic system was performed focusing on the parameters that affect the reduction by using different reductants (H2, CO, C3H6 and C3H8) and different temperatures (350, 250 and 150 °C), for a Pt/BaO/Al2O3 catalyst. Transient experiments show that H2 and CO are highly efficient reductants compared to C3H6 which is somewhat less efficient. H2 shows a significant reduction effect at relatively low temperature (150 °C) but with a low storage capacity. We find that C3H8 does not show any NO X reduction ability for NO X stored in Pt/BaO/Al2O3 at any of the temperatures. The formation of ammonia and nitrous oxide is also discussed.

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Authors and Affiliations

  1. Competence Center for Catalysis, Chalmers University of Technology, SE, 412 96, Göteborg, Sweden

    Hussam Abdulhamid, Erik Fridell & Magnus Skoglundh

  2. Department of Materials Surface Chemistry-Applied Surface Chemistry, Chalmers University of Technology, SE, 412 96, Göteborg, Sweden

    Hussam Abdulhamid & Magnus Skoglundh

Authors
  1. Hussam Abdulhamid
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  2. Erik Fridell
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  3. Magnus Skoglundh
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Correspondence to Erik Fridell.

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Abdulhamid, H., Fridell, E. & Skoglundh, M. Influence of the type of reducing agent (H2, CO, C3H6 and C3H8) on the reduction of stored NO X in a Pt/BaO/Al2O3 model catalyst. Topics in Catalysis 30, 161–168 (2004). https://doi.org/10.1023/B:TOCA.0000029745.87107.b8

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  • DOI: https://doi.org/10.1023/B:TOCA.0000029745.87107.b8

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