CATALYST FOR SELECTIVE REDUCTION OF NITROGEN OXIDES, METHOD FOR MAKING SAME AND USE THEREOF

摘要

A catalyst for the selective catalytic reduction of a nitrogen oxide, comprising a first component selected from oxides of a transition metal other than the metal contained in the second component, or a mixture or combination thereof, a second component selected from cerium oxides, cerium-zirconium composite oxides, and cerium-titanium composite oxides, and combinations thereof. The catalyst can be utilized in pellet form; or coated onto a porous monolithic ceramic to form a honeycomb-shaped catalyst. Provided in the present invention is also the process for making said catalyst, which includes: preparing the first component from the precursor of the first component; preparing the second component; and loading the first component onto the second component.