Composite structures with porous anodic oxide layers and...

B - Operations – Transporting – 01 – D

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B01D 71/02 (2006.01) C01B 3/50 (2006.01)

Patent

CA 2684771

Composite structures are described that have a porous anodic oxide layer such as, for example, a porous anodic aluminum oxide layer. In one aspect, the present invention includes a composite gas separation module having a porous metal substrate; a porous anodic aluminum oxide layer, wherein the porous anodic aluminum oxide layer overlies the porous metal substrate; and a dense gas-selective membrane, wherein the dense gas-selective membrane overlies the porous anodic aluminum oxide layer. A composite filter is described having a porous non- aluminum metal substrate; and a porous anodic aluminum oxide layer, wherein the porous anodic aluminum oxide layer defines pores extending through the porous anodic aluminum oxide layer. Methods for fabricating composite gas separation modules and composite filters and methods for selectively separating hydrogen gas from a hydrogen gas-containing gaseous stream are also described.

L'invention concerne des structures composites qui présentent une couche d'oxyde anodique poreuse telle que, par exemple, une couche d'oxyde d'aluminium anodique poreuse. Dans un aspect, la présente invention inclut - un module composite de séparation de gaz ayant un substrat métallique poreux ; - une couche d'oxyde d'aluminium anodique poreuse. La couche d'oxyde d'aluminium anodique poreuse recouvre le substrat métallique poreux ; et - une membrane sélective par rapport à un gaz dense, où la membrane sélective par rapport à un gaz dense recouvre la couche poreuse d'oxyde d'aluminium anodique. L'invention concerne également - un filtre composite ayant un substrat métallique poreux n'étant pas en aluminium ; et - une couche d'oxyde d'aluminium anodique poreuse, où la couche d'oxyde d'aluminium anodique poreuse définit des pores s'étendant à travers la couche d'oxyde d'aluminium anodique poreuse. L'invention concerne également - des procédés de fabrication de modules composites de séparation de gaz et de filtres composites et - des procédés permettant de séparer de manière sélective un gaz hydrogène d'un flux gazeux contenant du gaz hydrogène.

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