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Differences Between Al2O3 and Ag/Al2O3 for Lean Reduction of NO x with Dimethyl Ether

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Abstract

Lean reduction of NO x with DME occurs with high selectivity to N2 over Al2O3 between 300 °C and 550 °C with a maximum of 47% at 380 °C, and with lower selectivity over Ag/Al2O3 between 250 °C and 400 °C due to the catalysts’ sensitivity to gas phase radical reactions and activity for NO x reduction with methanol.

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Acknowledgements

This work was performed within the Competence Centre for Catalysis, which is hosted by Chalmers University of Technology and financially supported by the Swedish Energy Agency and the member companies: AB Volvo, Volvo Car Corporation, Scania CV AB, GM Powertrain Sweden AB, Haldor Topsøe A/S and the Swedish Space Corporation. Financial support from Knut and Alice Wallenberg Foundation, Dnr KAW 2005.0055, is gratefully acknowledged.

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Authors and Affiliations

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

    Stefanie Tamm, Hanna H. Ingelsten, Magnus Skoglundh & Anders E. C. Palmqvist

  2. Applied Surface Chemistry, Department of Chemical and Biological Engineering, Competence Centre for Catalysis, Chalmers University of Technology, 412 96, Göteborg, Sweden

    Stefanie Tamm, Hanna H. Ingelsten & Anders E. C. Palmqvist

Authors
  1. Stefanie Tamm
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  2. Hanna H. Ingelsten
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  3. Magnus Skoglundh
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  4. Anders E. C. Palmqvist
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Correspondence to Stefanie Tamm.

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Tamm, S., Ingelsten, H.H., Skoglundh, M. et al. Differences Between Al2O3 and Ag/Al2O3 for Lean Reduction of NO x with Dimethyl Ether. Top Catal 52, 1813 (2009). https://doi.org/10.1007/s11244-009-9358-2

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  • DOI: https://doi.org/10.1007/s11244-009-9358-2

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