Synergistic effect in lean NOx reduction by CH4 over Co/Al2O3 and H-zeolite catalysts

J. Y. Yan, Harold H Kung, W. M H Sachtler, M. C. Kung

Research output: Contribution to journalArticle

105 Citations (Scopus)

Abstract

In the reduction of NO by CH4 in the presence of a large excess of oxygen, the conversion to N2 over a physical mixture of Co/Al2O3 and H-zeolite catalysts was found to be twice as high as that expected if these components acted independently. This synergistic effect was observed with both H-ZSM-5 and H-USY. By comparing the activities of these catalysts for NO oxidation and CH4 reduction of NO2, it was concluded that the synergistic effect could be explained by the participation of Co ions and proton sites in the reaction. NO is oxidized to NO2 over the Co ions, and NO2 is reduced by CH4 to N2 over the proton sites.

Original languageEnglish
Pages (from-to)294-301
Number of pages8
JournalJournal of Catalysis
Volume175
Issue number2
Publication statusPublished - 1998

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Zeolites
Protons
Ions
catalysts
Catalysts
protons
ions
Oxygen
Oxidation
oxidation
oxygen

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Synergistic effect in lean NOx reduction by CH4 over Co/Al2O3 and H-zeolite catalysts. / Yan, J. Y.; Kung, Harold H; Sachtler, W. M H; Kung, M. C.

In: Journal of Catalysis, Vol. 175, No. 2, 1998, p. 294-301.

Research output: Contribution to journalArticle

Yan, J. Y. ; Kung, Harold H ; Sachtler, W. M H ; Kung, M. C. / Synergistic effect in lean NOx reduction by CH4 over Co/Al2O3 and H-zeolite catalysts. In: Journal of Catalysis. 1998 ; Vol. 175, No. 2. pp. 294-301.
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