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Abstract Iron-niobium composite oxides (NbaFeOx, a represents the mass percent of Nb in Fe-Nb composite oxides) were studied for the selective catalytic reduction (SCR) of NOx with NH3. The Nb-doped… Click to show full abstract
Abstract Iron-niobium composite oxides (NbaFeOx, a represents the mass percent of Nb in Fe-Nb composite oxides) were studied for the selective catalytic reduction (SCR) of NOx with NH3. The Nb-doped Fe2O3 was found to be responsible for the improved activity. The doping of Nb into Fe2O3 resulted in the improvement of specific surface areas, redox property and acidic amount. The optimal Nb30.3FeOx sample exhibited nearly 100% NOx conversion and N2 selectivity from 250 °C to 400 °C, which would be a promising candidate for NH3-SCR catalysts in the medium temperature ranges.
Journal Title: Catalysis Communications
Year Published: 2017
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