Catalytically coated particle filter and method for...

Details Catalytically coated particle filter and method for... Catalytically coated particle filter and method for...

2011-07-12

2011-07-12

Hendrickson, Stuart (Department: 1736)

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S333000, C502S527180, C502S178000

Reexamination Certificate

active

07977275

ABSTRACT:
The invention proposes a particulate filter having a catalytic coating which contains two catalysts arranged one behind the other. The first catalyst is located in the gas inlet region of the filter and contains a palladium/platinum catalyst. The second catalyst is arranged downstream of the first catalyst and preferably contains platinum alone as catalytically active component. The combination of these two catalysts provides the coated filter with a good ageing stability and resistance to sulphur poisoning.

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