Abstract
A facile synthesis of nanostructured vanadium oxide catalysts grown inside a honeycomb ceramic filter by electrodeposition without heat treatment is reported. The prepared catalysts are investigated for a selective catalytic reduction (SCR) of nitrogen oxide (NOx) with ammonia (NH3) in the temperature ranges from 250 to 450 °C. The SCR test results indicate that the NOx removal efficiency of the as-deposited sample is comparable to that of the sample heat treated at 600 °C as well as that of the sample prepared by conventional wash coating method. The nanostructured catalysts show similar NOx removal efficiencies after several recycles. Both polycrystalline and amorphous phases co-exist in the electrodeposited V-oxide catalysts confirmed by X-ray diffraction and selective area electron diffraction. The V-oxide catalysts show stronger V=O bond peaks and higher ratio of V4+/V5+ and Oα/Oβ on their surfaces as characterized by Raman spectroscopy and X-ray photoelectron spectroscopy.
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This research was supported by the National Research Foundation of Korea (2015R1A2A1A15053002).
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Kim, S.H., Cha, J.S., Jeon, Y.S. et al. Catalytic activity of vanadium oxide catalysts prepared by electrodeposition for the selective catalytic reduction of nitrogen oxides with ammonia. Reac Kinet Mech Cat 118, 633–641 (2016). https://doi.org/10.1007/s11144-016-1010-0
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DOI: https://doi.org/10.1007/s11144-016-1010-0