The desorption of O2 during NO and N2O decomposition on Cu- and Fe-zeolites

J. Valyon, W. S. Millman, W. Keith Hall

Research output: Contribution to journalArticle

88 Citations (Scopus)

Abstract

The decomposition of NO and of N2O over a CuZSM-5 zeolite and a Fe-mordenite, respectively, has been studied using tracer techniques. The results demonstrate the high mobility of the lattice oxygen ions in self-diffusion. They afford a possible explanation for the problem of how two extralattice oxygens located at positions remote from each other may combine to form the O2 molecules which are spontaneously desorbed in these redox reactions. They show that a portion of the lattice oxygen mixes into the O2 released on decomposition. The data also show that N18O and N218O undergo exchange with the catalyst oxygen under reaction conditions.

Original languageEnglish
Pages (from-to)215-225
Number of pages11
JournalCatalysis Letters
Volume24
Issue number3-4
DOIs
Publication statusPublished - Sep 1994

Fingerprint

Zeolites
zeolites
Desorption
desorption
Oxygen
Decomposition
decomposition
oxygen
oxygen ions
tracers
Redox reactions
catalysts
Ions
Catalysts
Molecules
molecules

Keywords

  • NO decomposition mechanism
  • O desorption
  • oxygen atom recombination
  • oxygen transport
  • Self-diffusion of O in zeolites

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

The desorption of O2 during NO and N2O decomposition on Cu- and Fe-zeolites. / Valyon, J.; Millman, W. S.; Hall, W. Keith.

In: Catalysis Letters, Vol. 24, No. 3-4, 09.1994, p. 215-225.

Research output: Contribution to journalArticle

Valyon, J. ; Millman, W. S. ; Hall, W. Keith. / The desorption of O2 during NO and N2O decomposition on Cu- and Fe-zeolites. In: Catalysis Letters. 1994 ; Vol. 24, No. 3-4. pp. 215-225.
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