Theoretical and experimental study on formation and adsorption of enolic species on Ag-Pd/Al2O3 catalyst

Spectrochim Acta A Mol Biomol Spectrosc. 2005 Oct;61(13-14):3117-23. doi: 10.1016/j.saa.2004.11.040.

Abstract

The formation and adsorption of enolic species on a palladium promoted Ag/Al2O3 catalyst (denoted Ag-Pd/Al2O3) during the selective catalytic reduction (SCR) of NOx by C3H6 has been studied by means of DRIFTS and density functional calculations. The structure of the enolic species adsorbed on Ag-Pd/Al2O3 catalyst has been established based on the in situ DRIFTS spectra and simulated results. The reaction mechanism from C3H6 to enolic species on Ag-Pd/Al2O3 catalyst was proposed and the hypothesis about the Pd promotion was discussed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aluminum Oxide / chemistry*
  • Catalysis
  • Models, Chemical*
  • Molecular Structure
  • Palladium / chemistry*
  • Silver / chemistry*
  • Spectrophotometry, Infrared
  • Temperature
  • Vibration

Substances

  • Silver
  • Palladium
  • Aluminum Oxide