Topics in Catalysis

, Volume 16, Issue 1, pp 157–164

Transient Surface Processes of Storage and Conversion of NOx Species on Pt–Me/Al2O3 Catalysts (Me = Ba, Ce, Cu)

  • G.E. Arena
  • A. Bianchini
  • G. Centi
  • F. Vazzana
Article

DOI: 10.1023/A:1016607603860

Cite this article as:
Arena, G., Bianchini, A., Centi, G. et al. Topics in Catalysis (2001) 16: 157. doi:10.1023/A:1016607603860

Abstract

The transient reactivity and surface phenomena of storage and conversion of NOx species on Pt(1%)–Me/Al2O3 catalysts, where Me = Ba, Ce and Cu, were studied by the RWF (rectangular wavefront) method. The Me component has a relevant influence on the processes of surface storage and transformation. The reduction of NOx by propene in the presence of oxygen is promoted by adding Cu to a Pt/Al2O3 catalyst, while cerium promotes transient conversion of NO in the absence of propene, but inhibits the reduction of NOx in the presence of propene. Copper is suggested to be a promising element to add together with Ba for new NOx storage-reduction catalysts due to its capacity to act both as a storage element and as promoter for NOx reduction.

NOx storageNOx lean conversiontransient reactivitybariumcoppercerium

Copyright information

© Plenum Publishing Corporation 2001

Authors and Affiliations

  • G.E. Arena
    • 1
  • A. Bianchini
    • 2
  • G. Centi
    • 3
    • 4
  • F. Vazzana
    • 1
  1. 1.Dipartimento di Chimica IndustrialeUniversità di MessinaItaly
  2. 2.Dipartimento di Chimica Industriale e MaterialiUniversity of BolognaItaly
  3. 3.Dipartimento di Chimica IndustrialeUniversità di MessinaMessinaItaly
  4. 4.Dipartimento di Chimica Industriale e MaterialiUniversity of BolognaItaly