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Catalysis Letters

, Volume 23, Issue 1–2, pp 141–149 | Cite as

The catalytic activity of Cu-ZSM-5 and Cu-Y zeolites in NO decomposition: dependence on copper concentration

  • M. C. Campa
  • V. Indovina
  • G. Minelli
  • G. Moretti
  • I. Pettiti
  • P. Porta
  • A. Riccio
Article

Abstract

NO decomposition was studied on Cu-ZSM-5 (Cu exchange extent from 23 to 210%) and Cu-Y (Cu exchange extent from 5 to 105%) catalysts at 773 K. The results show that the activity (NO molecules decomposed per gram of catalyst per second) increases by roughly 100-fold when the extent of exchange with copper in the ZSM-5 framework increases from 80 to 100%. This behaviour shows that not all Cu sites are equivalent in their decomposition activity. Cu-ZSM-5 samples prepared with either H-ZSM-5 or Na-ZSM-5 show the same activity pattern.

Keywords

NOx abatement Cu-ZSM-5 Cu-Y zeolite 

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Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • M. C. Campa
    • 1
  • V. Indovina
    • 1
  • G. Minelli
    • 1
  • G. Moretti
    • 1
  • I. Pettiti
    • 1
  • P. Porta
    • 1
  • A. Riccio
    • 1
  1. 1.Centro di Studio su “Struttura ed Attività Catalitica de Sistemi di Ossidi” (CNR), c/o Dipartimento di ChimicaUniversità “La Sapienza”RomeItaly

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