| abstract |
The invention discloses a rare earth-based denitration catalyst powder and a preparation method thereof. The preparation comprises the following steps: respectively preparing metatitanic acid slurry, ammonium paratungstate solution, and a mixed solution of cerium nitrate and lanthanum nitrate; transferring the ammonium paratungstate solution to the metatitanic acid slurry In the middle, the intermediate mixed solution is obtained; then the mixed solution of cerium nitrate and lanthanum nitrate is transferred to the upper intermediate mixed solution to obtain a mixed slurry of metatitanic acid, ammonium paratungstate, cerium nitrate and lanthanum nitrate; the pH of the solution is adjusted to the set range to obtain the mixed slurry containing Mixture of titanium, tungsten, cerium, and lanthanum; drying; calcining; grinding to make catalyst powder. The purpose of the present invention is to provide a kind of rare earth-based denitrification that is non-toxic to people and the environment, has anti-high temperature aging, long service life, wide temperature range and controllable product components, and has simple equipment requirements and operation procedures, and is easy to realize large-scale industrial production. Catalyst powder and its preparation method. |