Abstract：NiO components were doped to TiO2 carrier of V2O5-WO3/TiO2 catalysts by co-precipitation and the effect of NiO content on the microstructure， surface properties and SCR performance of the catalyst were investigated. Results show that NiO is incorporated into TiO2 to form NiTiO3， which inhibits the growth of TiO2 grains. The presence of isolated tetrahedron VO4 in Ni3V2O8 reduces the Br?nsted acid content on the catalyst surface， while the interaction between NiOx and VOx reduces the reducibility of the catalyst. The existence of V4+ in Ni3V2O8 is also not conducive to the improvement of catalyst denitration activity. Therefore， NiO doping into V2O5-WO3/TiO2 catalysts by an inappropriate method tends to poison the catalysts.
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2019, Vol. 29 
