Topics in Catalysis

, Volume 56, Issue 1–8, pp 311–316 | Cite as

Spectrokinetic Analysis of the NOx Storage Over a Pt–Ba/Al2O3 Lean NOx Trap Catalyst

  • Carlo Giorgio Visconti
  • Luca Lietti
  • Flavio Manenti
  • Marco Daturi
  • Michele Corbetta
  • Sauro Pierucci
  • Pio Forzatti
Original Paper

Abstract

In this work the kinetics of the (reactive) lean accumulation phase of the NOx storage-reduction process is described through a detailed kinetic model, involving both the gas-phase molecules and the adsorbed species. Kinetic data have been collected following a novel approach based on simultaneous operando spectroscopic measurements and on-line pulse reactor effluent analysis. To our knowledge, this is the first time the temporal evolutions of the concentration of both the surface and the gas species are used jointly to describe the kinetic of a transient catalytic process.

Keywords

Spectrokinetic NOx storage-reduction Operando spectroscopy Kinetic Lean NOx trap 

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Carlo Giorgio Visconti
    • 1
  • Luca Lietti
    • 1
  • Flavio Manenti
    • 2
  • Marco Daturi
    • 3
  • Michele Corbetta
    • 2
  • Sauro Pierucci
    • 2
  • Pio Forzatti
    • 1
  1. 1.Dipartimento di Energia, Politecnico di MilanoMilanItaly
  2. 2.Dipartimento di Chimica Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di MilanoMilanItaly
  3. 3.Laboratoire Catalyse et Spectrochimie, ENSICAEN, CNRS, Universitè de CaenCaen CedexFrance

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