http://www.cnr.it/ontology/cnr/individuo/prodotto/ID192835

The selective catalytic reduction of N2O with CH4 on Na-MOR and Na-MFI exchanged with copper, cobalt or manganese (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

The selective catalytic reduction of N2O with CH4 on Na-MOR and Na-MFI exchanged with copper, cobalt or manganese (Articolo in rivista) (literal)

Anno

2012-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/j.apcatb.2011.09.021 (literal)

Alternative label

M.C. Campa, V. Indovina, D. Pietrogiacomi (2012)
The selective catalytic reduction of N2O with CH4 on Na-MOR and Na-MFI exchanged with copper, cobalt or manganese
in Applied catalysis. B, Environmental (Print); Elsevier Science Publishers B.V., Amsterdam (Paesi Bassi)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

M.C. Campa, V. Indovina, D. Pietrogiacomi (literal)

Pagina inizio

90 (literal)

Pagina fine

95 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.sciencedirect.com/science/article/pii/S0926337311004486 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

111-112 (literal)

Rivista

Applied catalysis. B, Environmental (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

6 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

a) Dipartimento di Chimica, \"Sapienza\" Università di Roma, Piazzale Aldo Moro 5, 00185 Roma, Italy. b) Istituto ISMN (CNR), c/o Dipartimento di Chimica, \"Sapienza\" UniVersita` di Roma, Piazzale Aldo Moro 5, 00185 Roma, ItalyCNR - ISMN (literal)

Titolo

The selective catalytic reduction of N2O with CH4 on Na-MOR and Na-MFI exchanged with copper, cobalt or manganese (literal)

Abstract

Abstract Cu-MOR, Cu-MFI, Co-MOR, Co-MFI and Mn-MFI were prepared by ion-exchange of Na-MOR or Na-MFI. On all samples, the catalytic activity for N2O decomposition, CH4 + N2O, CH4 + O2, and for the selective catalytic reduction (SCR) of N2O in the presence of O2 was studied in a flow apparatus with GC analysis of reactants and products. Extensively exchanged Cu-MOR and Cu-MFI were active for N2O decomposition. Cu-MOR and Cu-MFI exchanged at about 20% were much less active. All Co-MOR and Co-MFI catalysts, irrespective of the exchange-extent, were active for the same reaction. Mn-MFI was nearly inactive up to 773 K. All catalysts were active for CH4 + N2O. Cu-MOR and Cu-MFI were active for CH4 + O2, whereas Co-MOR, Co-MFI and Mn-MFI were much less active for this reaction. Irrespective of the exchange extent, Cu-MOR, Cu-MFI, Co-MOR, and Co-MFI were active for the SCR of N2O with CH4. Conversely, Mn-MFI was not active for this reaction. Turnover frequency was slightly higher for the various reactions on Me-MFI (Me = Cu or Co) than for the corresponding reactions on Me-MOR. We conclude that on Cu- and Co-zeolites, the SCR of N2O with CH4 consists of two nearly independent reactions: CH4 + N2O prevails at high temperature (673-773 K), and CH4 + O2 at lower temperature. The two reactions involve different catalytically active oxygen species: CH4 + O2 involves a molecular form, and CH4 + N2O a monoatomic form, arising from N2O. Because Co-MOR and Co-MFI are also active for the SCR of NOx, we suggest that these materials are promising catalysts for the simultaneous SCR of N2O and NOx with CH4. (literal)

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