Effect of Pt dispersion on the reduction of NO by propene over alumina-supported Pt catalysts under lean-burn conditions

Jong Hwan Lee, Harold H. Kung

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Abstract

Reduction of NO by propene under lean-bum exhaust conditions and oxidation of NO were studied on two Pt/γ-Al2O3 catalysts of 4.4% and 82% dispersion of Pt. At 265 °C, the turnover frequency for the oxidation of NO was over 100 times higher on the low dispersion than the high dispersion catalyst. The difference was much less pronounced for the reduction of NO. In the reduction of NO, the N2O/N2 ratio in the product was found to increase with the conversion of hydrocarbon, while depend much less on Pt dispersion, temperature, or NO conversion.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalCatalysis Letters
Volume51
Issue number1
Publication statusPublished - Jan 1 1998

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Keywords

  • No oxidation
  • No reduction
  • No reduction
  • Propene reduction of no
  • Pt dispersion effect

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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