Identification of highly active iron sites in N2O-activated FE/MFI

Jifei Jia, Qi Sun, Bin Wen, Lin X. Chen, Wolfgang M H Sachtler

Research output: Contribution to journalArticle

52 Scopus citations

Abstract

Identification of highly active iron sites in N2O-activated Fe/MFI was analyzed. Reduction in an H2 flow at 600°C of Fe/MFI prepared by chemical vapor deposition and followed by its exposure to N2O at 250°C produced a highly active state characterized by an unusual TPR spike at 200°C. In situ X-ray absorption near-edge structure, X-ray absorption fine structure data and literature data on density functional theory (DFT) calculations suggested that in this state some Fe will be present in the oxidation state of Fe4+.

Original languageEnglish (US)
Pages (from-to)7-11
Number of pages5
JournalCatalysis Letters
Volume82
Issue number1-2
DOIs
StatePublished - Sep 1 2002

Keywords

  • Fe in MFI
  • In situ
  • NO dissociation
  • Oxidation state >3 of Fe
  • XAFS
  • XANES
  • α-sites

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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