Thin-walled monolithic metal oxide structures made from...

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B - Operations, Transporting

01

J

B01J 32/00 (2006.01) B01J 35/04 (2006.01) C04B 35/66 (2006.01) C23C 8/10 (2006.01) C23C 8/14 (2006.01) C23C 8/18 (2006.01)

Patent

CA 2252812

Monolithic metal oxide structures, and processes for making such structures, are disclosed. The structures are obtained by heating a metal-containing structure having a plurality of surfaces in close proximity to one another in an oxidative atmosphere at a temperature below the melting point of the metal while maintaining the close proximity of the metal surfaces. Exemplary structures of the invention include open-celled and closed-cell monolithic metal oxide structures comprising a plurality of adjacent bonded corrugated and/or flat layers, and metal oxide filters obtained from a plurality of metal filaments oxidized in close proximity to one another.

L'invention se rapporte à des structures d'oxyde métallique monolithiques et à leurs procédés de fabrication. On obtient ces structures en chauffant une structure renfermant du métal et dont la pluralité de surfaces sont très rapprochées les unes des autres dans une atmosphère d'oxydation, à une température inférieure au point de fusion du métal, tout en maintenant les surfaces métalliques très rapprochées. Certains types de structures de cette invention comprennent des structures d'oxyde métallique monolithiques à alvéoles ouvertes et à alvéoles fermées qui sont constituées d'une pluralité de couches adjacentes, ondulées et/ou plates, liées, et de filtres d'oxyde métallique obtenus à partir d'une pluralité de filaments métalliques oxydés en étant très rapprochés les uns des des autres.

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