| abstract |
The invention belongs to the technical field of denitration catalysis and environmental protection, and particularly relates to a preparation method of titanium dioxide powder for a diesel vehicle tail gas denitration catalyst. Preparing hydrolysis crystal seeds, hydrolyzing titanium liquid, washing metatitanic acid with water, pulping, adding sodium silicate and ammonium metatungstate solution into metatitanic acid slurry for coating treatment, and then carrying out post-treatment on the coated metatitanic acid to obtain TiO 2 And (3) powder. The titanium dioxide powder is used as a carrier of a vanadium-tungsten catalyst of a titanium-based system, has high aging specific surface area, and can be used for increasing the dosage of the existing catalystHigh catalytic effect of the catalyst and high catalytic activity at higher temperature. |