A kind of preparation method of honeycomb MN-based low-temperature denitration catalyst

Abstract

The invention discloses a preparation method of a honeycomb Mn-based low-temperature denitration catalyst, which includes the following contents: (1) Mix titanium dioxide, molecular sieve and a solution containing manganese nitrate, cerium nitrate and iron nitrate evenly, and then dry and roast at low temperature. , crushed into powdery material; (2) The powdery material obtained in step (1) is subjected to a denitration catalyst forming process to obtain a honeycomb Mn-based low-temperature denitration catalyst. The catalyst prepared by the method of the present invention has both large pore volume and strength, good molding performance, and is not easy to crack. The active component is manganese oxide in different valence states. The catalyst has excellent denitrification performance and good resistance to water vapor and SO2. 2 Poisoning ability.

Description

technical field

[0001] The invention belongs to the technical field of environmental protection catalysts, and mainly relates to a preparation method of a honeycomb Mn-based low-temperature denitration catalytic material. Background technique

[0002] At present, air pollution has become a very serious social problem. Among them, nitrogen oxide pollution will cause acid rain and other extreme weather, which has become an important part of air pollution. At present, the mainstream method for controlling nitrogen oxides is selective catalytic reduction (SCR), and SCR The investment in catalytic materials accounts for about 40% of the total investment, so the research and development of denitrification catalytic materials is very important.

[0003] At present, the denitrification catalytic materials on the market are mainly vanadium-tungsten-titanium system, and the catalytic materials of vanadium-tungsten-titanium system are more suitable for the flue gas conditions of power ...

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