Article Dans Une Revue Catalysis Letters Année : 1997

Deactivation of CuMFI catalysts under NO selective catalytic reduction by propene: influence of zeolite form, Si/Al ratio and copper content

Résumé

Deactivation of CuMFI catalysts under NO selective catalytic reduction (SCR) by propene in both the absence and the presence of water was investigated as a function of zeolite form, Si/Al ratio and copper content. It was verified that the CuMFI deactivation extent is higher on H-form zeolite compared to Na-form and decreases when the copper exchange level increases, which can be achieved either by increasing the zeolite Si/Al ratio or the copper content. Furthermore, the results indicated that the catalyst deactivation is mainly due to a change in copper species rather than in MFI structure.

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Dates et versions

hal-00179225 , version 1 (15-10-2007)

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Cidalia Torre-Abreu, Maria Filipa Ribeiro, Carlos Henriques, Fernando Ramôa Ribeiro, Gerard Delahay. Deactivation of CuMFI catalysts under NO selective catalytic reduction by propene: influence of zeolite form, Si/Al ratio and copper content. Catalysis Letters, 1997, 43, pp.31-36. ⟨10.1023/A:1018949430073⟩. ⟨hal-00179225⟩
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