Exhaust gas purifying catalyst

Details Exhaust gas purifying catalyst Exhaust gas purifying catalyst

2006-10-12

2009-10-27

Nguyen, Cam N (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S304000, C502S327000, C502S332000, C502S333000, C502S334000, C502S339000, C502S349000, C502S439000, C502S527190

Reexamination Certificate

active

07608561

ABSTRACT:
An exhaust gas purifying catalyst comprising: a honeycomb-like substrate disposed in an exhaust passage for an engine; and a catalytic layer formed on a cell wall of said substrate, said catalytic layer including a mixed oxide which contains Ce (cerium) and Zr (zirconium), and retains a catalytic noble metal in such a manner that said noble metal atoms are located at crystal lattice points or between the lattice points of the mixed oxide, wherein said mixed oxide includes a first mixed oxide containing CeO2in a mass greater than that of ZrO2, and a second mixed oxide containing ZrO2in a mass greater than that of CeO2.

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European Search Report Application No. EP 06 12 2787 dated on Feb. 5, 2008.

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