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- W3185336328 abstract "A series of iron–niobium composite oxides for selective catalytic reduction of NOx with NH3 (NH3-SCR) were prepared by coprecipitation with the assistance of CTAB. The obtained FeNb0.4Ox-C catalyst exhibited superior SCR performance, with NOx conversion above 90% at 250–400 °C under a high GHSV of 250 000 h–1. Characterization of the oxides by N2-physisorption, XRD, Raman, TG/DTA, NH3-TPD, H2-TPR, and XPS showed that when CTAB was present during preparation, a strong interaction between Fe and Nb was produced for the Fe–Nb catalysts made with an appropriate proportion of the two elements, which promoted the formation of γ-Fe2O3. The strong Fe–Nb interaction not only induced more reducible Fe at low temperatures but also enhanced the surface acidity, both of which brought about more active sites on the FeNb0.4Ox-C catalyst. Owing to such strong interaction between redox-acid sites, more NOx species were adsorbed and activated over FeNb0.4Ox-C, thus exhibiting high reactivity during the NH3-SCR reaction, which was revealed by DRIFT and kinetic studies." @default.
- W3185336328 created "2021-08-02" @default.
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- W3185336328 date "2021-07-20" @default.
- W3185336328 modified "2023-10-15" @default.
- W3185336328 title "Design of High-Performance Iron–Niobium Composite Oxide Catalysts for NH<sub>3</sub>-SCR: Insights into the Interaction between Fe and Nb" @default.
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- W3185336328 doi "https://doi.org/10.1021/acscatal.1c01619" @default.
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