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Two Reaction Pathways in the Selective Catalytic Reduction of NO x by C6H14 Over Ag–Al2O3 with H2 Co-Feeding

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Abstract

The NO x reduction with n-C6H14 was studied over a 3% Ag/Al2O3 catalyst in the presence of hydrogen. The catalyst performance was evaluated by varying the H2 concentration from 0 to 1600 ppm and by comparing the results with blank runs in which an empty reactor with no catalyst was used. Two distinct reaction pathways were revealed: one at low-temperature (Treact < 370 °C) and another one at high-temperature (Treact > 370–390 °C). Co-feeding of H2 promotes the reaction within the 150–360 °C interval. The high-temperature pathway (Treact > 370–390 °C) seems to be almost independent of hydrogen co-feeding. The homogeneous gas-phase NO x oxidation initiated by NO presumably plays an important role in this high-temperature pathway.

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Authors and Affiliations

  1. Zelinsky Institute of Organic Chemistry, Leninsky Pr. 47, 119991, Moscow, Russia

    A. Yu. Stakheev, P. V. Pributkov, G. N. Baeva, G. O. Bragina & N. S. Telegina

  2. Haldor Topsoe A/S, Nymøllevej 55, P.O. Box 213, 2800, Lyngby, Denmark

    S. Dahl & I. Gekas

Authors
  1. A. Yu. Stakheev
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  2. P. V. Pributkov
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  3. S. Dahl
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  4. I. Gekas
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  5. G. N. Baeva
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  6. G. O. Bragina
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  7. N. S. Telegina
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Correspondence to A. Yu. Stakheev.

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Stakheev, A.Y., Pributkov, P.V., Dahl, S. et al. Two Reaction Pathways in the Selective Catalytic Reduction of NO x by C6H14 Over Ag–Al2O3 with H2 Co-Feeding. Top Catal 52, 1821 (2009). https://doi.org/10.1007/s11244-009-9356-4

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  • DOI: https://doi.org/10.1007/s11244-009-9356-4

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