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- W2023686795 abstract "Abstract A comparative study of Pt/alumina and Rh/alumina catalysts was performed for the selective catalytic reduction of NO with C3H6 in the presence of excess oxygen. Pt/alumina was more active for NO reduction at lower temperatures compared to Rh/alumina. However, the latter exhibited clearly superior performance in terms of selectivity to N2. This makes Rh/alumina a more suitable catalyst for the selective catalytic reduction of NO under excess oxygen conditions. Detailed kinetic studies of the SCR of NO were performed on Pt/alumina and Rh/alumina to obtain low-temperature kinetic expressions for NO reduction and C3H6 oxidation in the presence and absence of NO. Qualitative similarities yet quantitative differences in these kinetic expressions appear to indicate the existence of two partially similar mechanistic schemes. One is based on the indirect participation of the reductant through reduction of the active sites, followed by dissociative adsorption of NO on reduced sites (applicable for Pt/alumina). The other is based on the direct participation of the reductant (apparently by its partial oxidation) in forming an activated intermediate species, followed by its interaction with activated NO (applicable for Rh/alumina)." @default.
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- W2023686795 date "1999-12-01" @default.
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- W2023686795 title "Selective catalytic reduction of NO by propene in excess oxygen on Pt- and Rh-supported alumina catalysts" @default.
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- W2023686795 doi "https://doi.org/10.1016/s0920-5861(99)00207-2" @default.
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