Selective catalytic reduction of NOx by NH3 on Cu-SAPO-34 catalysts: Influence of silicium content on the activity of calcined and hydrotreated samples - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Chemical Engineering Journal Année : 2015

Selective catalytic reduction of NOx by NH3 on Cu-SAPO-34 catalysts: Influence of silicium content on the activity of calcined and hydrotreated samples

Résumé

SAPO-34 zeolites with three different Si contents were prepared by hydrothermal synthesis and then around 0.6 wt% Cu was introduced by impregnation. The structure and morphology of the samples were characterised via XRD and SEM techniques, respectively. The acid properties of the different samples were investigated by NH3-TPD. Cu-SAPO-34, with the lowest Si content, exhibits the best efficiency, between 200 and 550 °C, in NH3-SCR of NO after ageing treatment under H2O vapour at 850 °C for 5 h. For the fast reaction, (NO/NO2), a better efficiency is only observed with respect to the catalyst having low Si content.
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Dates et versions

hal-01092586 , version 1 (09-12-2014)

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Carolina Petitto, Gérard Delahay. Selective catalytic reduction of NOx by NH3 on Cu-SAPO-34 catalysts: Influence of silicium content on the activity of calcined and hydrotreated samples. Chemical Engineering Journal, 2015, 264, pp.404 - 410. ⟨10.1016/j.cej.2014.11.111⟩. ⟨hal-01092586⟩
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