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  • Title: Enhancement of the activity of Cu/TiO2 catalyst by Eu modification for selective catalytic reduction of NOx with NH3.
    Author: Liu YZ, Xu QY, Guo RT, Duan CP, Wu GL, Miao YF, Gu JW.
    Journal: Environ Sci Pollut Res Int; 2020 Aug; 27(22):27663-27673. PubMed ID: 32394254.
    Abstract:
    The Cu/TiO2 catalysts with the addition of Eu were developed by the sol-gel way for the selective catalytic reduction (SCR) of NOx by NH3. Activity tests revealed that CuEu/TiO2-0.15 catalyst showed the optimal de-NOx performance in a wide temperature range (150-300 °C), along with an admirable SO2 tolerance. According to characterization analysis, the relationship between the NH3-SCR performance and physicochemical characters of samples was explored. The adjunction of Eu on Cu/TiO2 catalyst can contribute to the formation of a large amount of Cu2+, adsorbed oxygen, and acid sites on the catalyst surface. Moreover, the Eu addition on Cu/TiO2 is favorable to the generation of activated NOx and NH3 substances adsorbed on the catalyst surface, which would conduce to the NH3-SCR process by Langmuir-Hinshelwood (L-H) mechanism effectively.
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