Archivio Istituzionale della RicercaThe adsorption of NO at 80°C on Cu-overexchanged ZSM-5 (Si/Al = 80) has been investigated in a flow apparatus. The formation of N2O during a transient phase was observed after He pretreatment of the zeolite at 550°C. A negligible amount of N2O was detected, in contrast, from O2 pretreated zeolite. The formation of N 2O has been associated to the reoxidation from Cu+ to Cu+2 of a fraction (about 40%) of copper in the zeolite. The redox chemistry in NO adsorption at low temperature can be related to the activity of Cu-ZSM-5 zeolite in NO decomposition
TRANSIENT BEHAVIOUR OF Cu-OVEREXCHANGED ZSM-5 CATALYST IN NO DECOMPOSITION / Pirone, Raffaele; E., Garufi; P., Ciambelli; G., Moretti; G., Russo. - In: CATALYSIS LETTERS. - ISSN 1011-372X. - STAMPA. - 43:3-4(1997), pp. 255-259. [10.1023/A:1018967328681]
TRANSIENT BEHAVIOUR OF Cu-OVEREXCHANGED ZSM-5 CATALYST IN NO DECOMPOSITION
PIRONE, RAFFAELE;
1997
Abstract
The adsorption of NO at 80°C on Cu-overexchanged ZSM-5 (Si/Al = 80) has been investigated in a flow apparatus. The formation of N2O during a transient phase was observed after He pretreatment of the zeolite at 550°C. A negligible amount of N2O was detected, in contrast, from O2 pretreated zeolite. The formation of N 2O has been associated to the reoxidation from Cu+ to Cu+2 of a fraction (about 40%) of copper in the zeolite. The redox chemistry in NO adsorption at low temperature can be related to the activity of Cu-ZSM-5 zeolite in NO decomposition
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https://hdl.handle.net/11583/2497369
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