NO oxidation kinetics on iron zeolites: in.uence of framework type and iron speciation

R. Brosiusa, D. Habermachera, J. A. Martensa, L. Vradmanb, M. Herskowitz, L. Čapek, Z. Sobalík, J. Dědeček, B. Wichterlová, V. Tokarová, O. Gonsiorová

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22 Scopus citations

Abstract

The NO oxidations kinetics on iron exchanged zeolites with FER, MFI, and *BEA framework was studied. The kinetic analysis revealed the occurrence of strong reaction inhibition by adsorbed NO2. FER and MFI zeolites were more active than *BEA type zeolite. MFI zeolite was most active but suffered most from NO2 inhibition of the reaction rate. The presence of Fe3+ ions in cationic sites was essential for the oxidation of NO into NO2. Compared to the isolated Fe3+ species, the binuclear complexes abundantly present in the MFI zeolite was the most sensitive to poisoning by NO2.

Original languageEnglish
Pages (from-to)333-340
Number of pages8
JournalTopics in Catalysis
Volume30-31
StatePublished - 1 Jul 2004
Event6th Congress on Catalysis and Automotive Pollution Control - Brussels, Belgium
Duration: 22 Oct 200324 Oct 2003

Keywords

  • Beta zeolite
  • Fe-MFI zeolite
  • Ferrierite
  • Iron
  • NO
  • NO oxidation
  • SCR

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