Porous ceramic filters with catalyst coatings

Porous ceramic filters with catalyst coatings

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...

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Hauptverfasser: Tao, Tinghong, Wang, Jianguo
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creator Tao, Tinghong
Wang, Jianguo
description 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 that preferentially block the micropore/microchannel pore volume of the article.
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title Porous ceramic filters with catalyst coatings
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