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

Research output: Contribution to journalConference articlepeer-review

21 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

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry

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