Automobile exhaust gas purifying combustion catalysts

Details Automobile exhaust gas purifying combustion catalysts Automobile exhaust gas purifying combustion catalysts

2004-04-19

2008-12-09

Nguyen, Cam N. (Department: 1793)

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

Catalyst or precursor therefor

Silicon containing or process of making

C502S250000, C502S345000

Reexamination Certificate

active

07462576

ABSTRACT:
The present invention provides combustion catalysts that have high exhaust gas-purifying activity and are less expensive than conventional ones.The catalysts include:(1) A calcium salt, amorphous silica, and a copper compound,(2) Amorphous silica, and a copper compound,(3) (1) At least one of crystalline silica and amorphous silica, (2) a calcium salt, and (3) a copper oxide, and(4) (1) At least one of crystalline silica and amorphous silica, and (2) a copper oxide.

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Office Action for German Patent Application No. 10 2004 018 947.5-47, issued Mar. 30, 2007.

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