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Selective reduction of nitric oxide by methane on H-form zeolite catalysts in oxygen-rich atmosphere

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Abstract

Selective reduction of NO by CH4 in the presence of excess oxygen was investigated using H-form zeolite catalysts. H-ZSM-5, H-ferrierite, and H-mordenite showed high catalytic activity and selectivity. On the contrary, H-USY and Al2O3 were not effective for this reaction. Both NO-CH4 and O2-CH4 reaction hardly proceeded on H-ZSM-5. Higher NOx conversion was obtained in the NO2-O2-CH4 and NO2-CH4 systems than in the NO-O2-CH4 system under high GHSV condition. It seemed that NO2 plays an important role for selective reduction of NO by CH4 on H-form zeolites.

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Authors and Affiliations

  1. Department of Applied Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, 169, Tokyo, Japan

    Katsunori Yogo, Michiaki Umeno, Hirotake Watanabe & Eiichi Kikuchi

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  1. Katsunori Yogo
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  2. Michiaki Umeno
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  3. Hirotake Watanabe
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  4. Eiichi Kikuchi
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Yogo, K., Umeno, M., Watanabe, H. et al. Selective reduction of nitric oxide by methane on H-form zeolite catalysts in oxygen-rich atmosphere. Catal Lett 19, 131–135 (1993). https://doi.org/10.1007/BF00771747

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  • DOI: https://doi.org/10.1007/BF00771747

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