Isotopic study of N2O decomposition on an ion-exchanged Fe-zeolite catalyst: Mechanism of O2 formation

Takeshi Nobukawa, Shin Ichi Tanaka, Shin Ichi Ito, Keiichi Tomishige, Satoshi Kameoka, Kimio Kunimori

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30 Citations (Scopus)


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 (N216O + 18O(a) → N2 + 16O18O).

Original languageEnglish
Pages (from-to)5-8
Number of pages4
JournalCatalysis Letters
Issue number1-2
Publication statusPublished - 2002 Oct
Externally publishedYes


  • Fe-MFI catalyst
  • NO decomposition
  • O isotope
  • Reaction mechanism

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)


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