Article Dans Une Revue Environmental Science and Pollution Research Année : 2022

Catalytic activity of Cu/η-Al2O3 catalysts prepared from aluminum scraps in the NH3-SCO and in the NH3-SCR of NO

Résumé

Copper loaded η-alumina catalysts with different copper contents were prepared by impregnation/evaporation method. The catalysts were characterized by XRD, FTIR, BET, UVvis, H 2-TPR and evaluated, for the first time, in the selective catalytic reduction of NO by NH 3 and in the selective catalytic oxidation of NH 3. The characterization techniques showed that the impregnation/evaporation method permits to obtain highly dispersed copper oxide species on the η-alumina surface when low amount of copper is used (1wt. % and 2 wt.%). The wet impregnation method made it possible to reach a well dispersion of the copper species! on the surface of the alumina for the low copper contents Cu(1)-Al 2 O 3 and Cu(2)-Al 2 O 3. The latter justifies the similar behavior of Cu(1)-Al 2 O 3) and Cu(2)-Al 2 O 3 in the selective catalytic oxidation of NH 3 where these catalysts exhibit a conversion of NH 3 to N 2 of the order of 100% at T> 500°C .

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hal-03517496 , version 1 (07-01-2022)

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Nawel Jraba, Thabet Makhlouf, Gérard Delahay, Hassib Tounsi. Catalytic activity of Cu/η-Al2O3 catalysts prepared from aluminum scraps in the NH3-SCO and in the NH3-SCR of NO. Environmental Science and Pollution Research, 2022, 29, pp.9053-9064. ⟨10.1007/s11356-021-16206-1⟩. ⟨hal-03517496⟩
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