초록 ▼

The present invention relates to a zirconium, rare earth containing composition comprising zirconium, cerium, neodymium and praseodymium components and the use of this composition in a catalyst composition useful for the treatment of gases to reduce contaminants contained therein and method process

The present invention relates to a zirconium, rare earth containing composition comprising zirconium, cerium, neodymium and praseodymium components and the use of this composition in a catalyst composition useful for the treatment of gases to reduce contaminants contained therein and method process to make the catalyst composition. The catalyst has the capability of substantially simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides.

대표청구항 ▼

[ What is claimed is:] [1.] A precipitated composite consisting essentially of a diluent component in which is incorporated a cerium component, neodymium component and a praseodymium component, wherein there is:40 to 80 percent of the diluent component selected from zirconia and zirconia activated a

[ What is claimed is:] [1.] A precipitated composite consisting essentially of a diluent component in which is incorporated a cerium component, neodymium component and a praseodymium component, wherein there is:40 to 80 percent of the diluent component selected from zirconia and zirconia activated alumina;10 to 60 weight percent of the cerium component;2 to 15 weight percent of the neodymium component; and2 to 15 weight percent of the praseodymium component.