CuAPSO-34 catalysts for N2O decomposition in the presence of H2O. A study of zeolitic structure stability in comparison to Cu-SAPO-34 and Cu-ZSM-5

A. Frache, B. I. Palella, M. Cadoni, R. Pirone, H. O. Pastore, L. Marchese

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

N2O is a strong greenhouse gas with a global warming potential > 270 times that of CO2. Sources of N2O include emissions from cars, trucks, etc. The structural stability at high temperatures of both Cu-exchanged SAPO-34 and CuAPSO-34 with isomorphously substituted copper ions was studied. The CuAPSO-34 showed good activity in N2O decomposition even when the reaction was run in the presence of H2O or after aging treatment under H2O vapor at 600°C for 80 hr which led to a drastic loss of activity of Cu-ZSM-5. Structure dealumination and a reduction of ∼ 70% of the Cu+ ions occurred after aging under water vapor, which could be the cause of the poorer catalytic behavior of Cu-ZSM-5.

Lingua originaleInglese
pagine (da-a)53-57
Numero di pagine5
RivistaTopics in Catalysis
Volume22
Numero di pubblicazione1-2
DOI
Stato di pubblicazionePubblicato - gen 2003

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