The effect of SO2 on the oxidation of NO over Fe-MFI and Fe-ferrierite catalysts made by solid-state ion exchange

Richard Giles, Noel W. Cant*, Markus Kögel, Thomas Turek, David L. Trimm

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    29 Citations (Scopus)

    Abstract

    The oxidation of NO and of SO2, separately and together, has been investigated over a Fe-MFI catalyst made by solid-state ion exchange. The catalyst is more active than Pt/SiO2 for the oxidation of NO alone but less active for SO2 oxidation. The activity for NO oxidation is greatly inhibited by the simultaneous presence of SO2 or water but complete recovery of the activity is possible when they are removed subsequently. Exposure to H2O during NO oxidation results in displacement of NO2 and NO to an amount which is equivalent to a NO(x)/Fe ratio of 2. A Fe-ferrierite catalyst also made by solid-state ion exchange is more active that Fe-MFI for NO oxidation but more susceptible to SO2 poisoning.

    Original languageEnglish
    Pages (from-to)L75-L81
    Number of pages7
    JournalApplied Catalysis B: Environmental
    Volume25
    Issue number2-3
    DOIs
    Publication statusPublished - 6 Mar 2000

    Keywords

    • Fe-ferrierite
    • Fe-MFI
    • NO oxidation
    • SO inhibition
    • Water inhibition

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