Exhaust gas purifying catalyst and process for purifying...

Details Exhaust gas purifying catalyst and process for purifying... Exhaust gas purifying catalyst and process for purifying...

2007-09-04

2007-09-04

Wood, Elizabeth D. (Department: 1755)

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

Zeolite or clay, including gallium analogs

And additional al or si containing component

C502S060000, C502S063000, C502S064000, C502S065000, C502S067000, C502S069000, C502S071000, C502S073000, C502S074000, C502S078000, C502S079000, C502S077000, C502S527150

Reexamination Certificate

active

10824847

ABSTRACT:
An exhaust gas purifying catalyst formed by having a first rhodium-containing catalyst layer, a second zeolite-containing catalyst layer, and a third palladium-containing catalyst layer superposed sequentially on a carrier, and a process for purifying the exhaust gas from an internal combustion engine by using the catalyst. A catalyst possessing durability and excelling in the ability to adsorb hydrocarbon, the ability to purify, and the three-way performance is provided.

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