Brooks Kushman P.C.
Exhaust gas purification catalytic material and method for fabricating the same
The present invention relates to an exhaust gas purification catalytic material containing: (a) a mixed oxide containing Ce and Zr for storing and releasing oxygen; and (b) a precious metal catalyst made of one or more kinds of precious metals. The precious metal catalyst comprises a first precious metal catalyst component placed between atoms, at crystal lattice points and/or at oxygen defect sites of the mixed oxide and a second precious metal catalyst component loaded on the surface of the mixed oxide, thereby improving the thermal resistance, oxygen storage capacity and exhaust gas conversion performance of the catalytic material.
Mazda Motor Corporation
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Akihide Hideharu Hiroshi Yuki Seiji Masaaki
Takami Iwakuni Yamada Murakami Miyoshi Akamine