Porous ceramic filters with catalyst coatings

Details Porous ceramic filters with catalyst coatings Porous ceramic filters with catalyst coatings

2006-10-17

2006-10-17

Choi, Ling-Sui (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S307500, C526S303100, C502S263000, C502S439000, C502S527190, C427S226000, C427S314000, C427S384000

Reexamination Certificate

active

07122612

ABSTRACT:
Porous ceramic catalyst supports or filters to be provided with catalyst coatings via oxide washcoating processes are pre-coated with cross-linked polymer barrier layers to prevent washcoat nanoparticle intrusion into the microcracked and/or microporous surfaces of the ceramics, the barrier coatings being formed by thermally cross-linking hydrocarbon polymers that are vaporizable at moderate washcoat stabilization or catalyst activation temperatures and being preferentially.

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