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Isotopic Study of N2O Decomposition on an Ion-Exchanged Fe-Zeolite Catalyst: Mechanism of O2 Formation

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Abstract

N2O decomposition on an ion-exchanged Fe-MFI catalyst has been studied using an 18O-tracer technique in order to reveal the reaction mechanism. N2 16O was pulsed onto an 18O2-treated Fe-MFI catalyst at 693 K, and the O2 molecules produced were monitored by means of mass spectrometry. The 18O fraction in the produced oxygen had almost half the value of that on the surface oxygen, and 18O18O was not detected. The result shows that O2 formation proceeds via the Eley–Rideal mechanism (N2 16O + 18O(a) → N2 + 16O18O).

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Authors and Affiliations

  1. Institute of Materials Science, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki, 305-8573, Japan

    Takeshi Nobukawa, Shin-ichi Tanaka, Shin-ichi Ito, Keiichi Tomishige, Satoshi Kameoka & Kimio Kunimori

Authors
  1. Takeshi Nobukawa
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  2. Shin-ichi Tanaka
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  3. Shin-ichi Ito
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  4. Keiichi Tomishige
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  5. Satoshi Kameoka
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  6. Kimio Kunimori
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Nobukawa, T., Tanaka, Si., Ito, Si. et al. Isotopic Study of N2O Decomposition on an Ion-Exchanged Fe-Zeolite Catalyst: Mechanism of O2 Formation. Catalysis Letters 83, 5–8 (2002). https://doi.org/10.1023/A:1020636910973

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