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Investigation of Co-Based DeNOx Catalysts for the Treatment of Natural Gas Lean-Burn Engine Exhaust

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Abstract

The catalytic reduction of nitric oxide with methane in lean conditions has been investigated on cobalt-based powder and monolith catalysts such as Co-exchanged ferrierite, Co-exchanged beta zeolite and Co–ZrO2. From catalyst laboratory testing the following activity scale was obtained: Co-ferrierite > Co-beta >>> Co–ZrO2, suggesting a significant role of the support catalytic matrix. In the tests at the engine exhaust, the best results were obtained with Co-ferrierite, after water separation from the exhaust. However, in the presence of the high concentration of water, typical of the engine exhaust, the performances were dramatically reduced.

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Authors and Affiliations

  1. Dipartimento di Ingegneria Chimica e Alimentare, Università di Salerno, 84084, Fisciano (SA), Italy

    P. Ciambelli, M.C. Gaudino & D. Sannino

  2. Istituto Motori, Consiglio Nazionale delle Ricerche, Napoli, Italy

    P. Corbo & F. Migliardini

Authors
  1. P. Ciambelli
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  2. P. Corbo
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  3. M.C. Gaudino
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  4. F. Migliardini
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  5. D. Sannino
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Ciambelli, P., Corbo, P., Gaudino, M. et al. Investigation of Co-Based DeNOx Catalysts for the Treatment of Natural Gas Lean-Burn Engine Exhaust. Topics in Catalysis 16, 413–417 (2001). https://doi.org/10.1023/A:1016689822033

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  • DOI: https://doi.org/10.1023/A:1016689822033

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