On the surface reactions during NO reduction with propene and propane on Ni-exchanged mordenite

B.I. Mosqueda Jimenez, A. Jentys, Kulathuiyer Seshan, J.A. Lercher

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Abstract

The reduction of NO with propene and propane on Ni-exchanged mordenite was investigated by in situ infrared spectroscopy. Nitrates and organic nitro compounds were formed on the catalyst upon exposure to NO, O2, propene and/or propane. In the presence of propene, carbonaceous deposits consisting of oxygenated carbon species, condensed aromatic compounds and polyenes were formed. The concentration of deposits on the catalyst was considerably lower for propane. Isocyanates associated with Ni were identified as reactive intermediates during the reduction of NO to N2. Oxygenated carbon species contribute to the formation of CO2 and might be involved in the formation of isocyanates.
Original languageUndefined
Pages (from-to)189-202
Number of pages14
JournalApplied catalysis B: environmental
Volume46
Issue number1
DOIs
Publication statusPublished - 2003

Keywords

  • Mechanism
  • Zeolites
  • Propane
  • Ni-exchanged mordenite
  • FT-IR spectroscopy
  • NO reduction
  • Isocyanates
  • Hydrocarbons
  • Adsorption
  • IR-75496
  • Propene
  • METIS-213864

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