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

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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.

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Authors and Affiliations

  1. Centro di Studio su “Struttura ed Attività Catalitica de Sistemi di Ossidi” (CNR), c/o Dipartimento di Chimica, Università “La Sapienza”, p.le A. Moro 5, 00185, Rome, Italy

    M. C. Campa, V. Indovina, G. Minelli, G. Moretti, I. Pettiti, P. Porta & A. Riccio

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  1. M. C. Campa
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  2. V. Indovina
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  3. G. Minelli
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  4. G. Moretti
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  5. I. Pettiti
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  6. P. Porta
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  7. A. Riccio
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Campa, M.C., Indovina, V., Minelli, G. et al. The catalytic activity of Cu-ZSM-5 and Cu-Y zeolites in NO decomposition: dependence on copper concentration. Catal Lett 23, 141–149 (1994). https://doi.org/10.1007/BF00812142

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  • DOI: https://doi.org/10.1007/BF00812142

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