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US 12,458,924 B2Granted
Low-temperature denitration catalyst
AssigneeCommonwealth Scientific and Industrial Research Organisation
InventorsZongli Xie, Choon Chian Ng, Yuliang Li
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Abstract
The present disclosure generally relates to a denitration catalyst, and in particular to a method for preparing the denitration catalyst. The present disclosure also relates to a method for preparing a coated substrate comprising the denitration catalyst. The present invention also relates to use of the denitration catalyst and/or coated substrate at low temperatures and/or humid environments.
Claims11
A process for preparing a denitration catalyst, comprising:
- (a) preparing an aqueous mixed-metal nitrate solution consisting of a manganese nitrate, an iron nitrate and an alkaline precipitant which are continuously fed into a sonication-assisted co-precipitation reactor, to form a mixed-metal hydroxide salt precipitate in the form of a slurry collected from the reactor;
- and
- (b) calcining the mixed-metal hydroxide salt precipitate to form the denitration catalyst, wherein the grain size of the denitration catalyst is less than about 0.5 μm;
- wherein step (a) is sonication-assisted co-precipitation to form the mixed-metal hydroxide salt precipitate.
1 more element
Dependencies are inferred from the claim text.