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

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Abstract

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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Authors
  1. C. Torre-Abreu
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  2. M.F. Ribeiro
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  3. C. Henriques
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  4. F.R. Ribeiro
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  5. G. Delahay
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Torre-Abreu, C., Ribeiro, M., Henriques, C. et al. Deactivation of CuMFI catalysts under NO selective catalytic reduction by propene: influence of zeolite form, Si/Al ratio and copper content. Catalysis Letters 43, 31–36 (1997). https://doi.org/10.1023/A:1018949430073

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