Destruction of NO during catalytic combustion on platinum and palladium

Navin Khadiya, Nick G. Glumac

Research output: Contribution to journalArticlepeer-review

Abstract

Mole fraction profiles of NO are obtained by laser-induced fluorescence in a catalytic combustion environment consisting of a stagnation flow of hydrogen, oxygen, and 150 ppm of NO over platinum and palladium substrates. For both catalysts under a wide range of equivalence ratios, including lean conditions, diffusion limited destruction of the added NO is observed when catalytic combustion occurs at the surface. With ignition in the gas-phase and a flow over the platinum surface, negligible NO destruction is observed under fuel-lean conditions. The profiles are compared with the predictions of a flame model that includes complex gas-phase and surface chemistry. The results highlight the need for inclusion of heterogeneous NO removal steps in surface modeling of catalytic combustion systems.

Original languageEnglish (US)
Pages (from-to)249-266
Number of pages18
JournalCombustion science and technology
Volume165
Issue number1
DOIs
StatePublished - Jan 1 2001
Externally publishedYes

Keywords

  • Catalytic combustion
  • Hydrogen-oxygen
  • NO
  • Pd
  • Pt

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

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