| abstract |
The present invention relates to a kind of for going the catalyst of denitrification and a kind of method relating to nox in exhaust level for reducing Diesel engine from the aerofluxus of Diesel engine.This catalyst is made up of carrier and a catalytically active coatings of an a length of L, and this catalytically active coatings can and then be formed by one or more material areas.These material areas include SCR (SCR activity) mixed oxide being made up of following item: cerium oxide, zirconium oxide, rare-earth sesquioxide and niobium oxide and optional tungsten oxide.In addition, these material areas include that at least one is selected from the compound of lower group, and this group is made up of the following: Barium monoxide, barium hydroxide, brium carbonate, strontium oxide, Strontium hydrate., strontium carbonate, praseodymium oxide, lanthana, magnesium oxide, magnesium/aluminium-mixed oxide, alkali metal oxide, alkali metal hydroxide, alkali carbonate and mixture thereof.Noble metal can also be optionally present in this catalyst. |