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Infrared study of catalytic reduction of lean NOx with alcohols over alumina-supported silver catalyst

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Abstract

Two intense IR absorption bands due to surface isocyanate (-NCO) species have been observed at 2262 and 2232 cm−1 when an alumina-supported silver catalyst is exposed to a mixture of NO, O2 and ethanol at 150°C and subsequently heated to > 300°C in vacuum. The intensity of the isocyanate band is hardly affected by the water existing in the mixture. Methanol is less reactive than ethanol for the formation of isocyanate species. The reaction mechanism of catalytic reduction of lean NOx with alcohols is discussed based on these IR spectroscopic findings.

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Authors and Affiliations

  1. National Institute for Resources and Environment, Onogawa, Tsukuba, 305, Ibaraki, Japan

    Yuji Ukisu & Tatsuo Miyadera

  2. Riken Corporation, Suehiro, Kumagaya, 360, Saitama, Japan

    Akira Abe & Kiyohide Yoshida

Authors
  1. Yuji Ukisu
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  2. Tatsuo Miyadera
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  3. Akira Abe
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  4. Kiyohide Yoshida
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Ukisu, Y., Miyadera, T., Abe, A. et al. Infrared study of catalytic reduction of lean NOx with alcohols over alumina-supported silver catalyst. Catal Lett 39, 265–267 (1996). https://doi.org/10.1007/BF00805593

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  • DOI: https://doi.org/10.1007/BF00805593

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