Composite gas separation modules having intermediate porous...

B - Operations – Transporting – 01 – D

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B01D 53/22 (2006.01) B01D 71/02 (2006.01) C01B 3/50 (2006.01)

Patent

CA 2519769

The present invention relates to a composite gas separation module and to methods for fabricating a composite gas separation module. The present invention also relates to methods for selectively separating hydrogen gas from a hydrogen gas containing gaseous stream. In one embodiment, the composite gas separation module includes a porous metal substrate; an intermediate porous metal layer, wherein the intermediate porous metal layer overlies the porous metal substrate; and a dense hydrogen-selective membrane, wherein the dense hydrogen-selective membrane overlies the intermediate porous metal layer. The intermediate porous metal layer can include can include palladium and a Group IB metal. For example, the intermediate porous metal layer can contain alternating layers of palladium and a Group IB metal.

L'invention concerne un module composite de séparation de gaz et des méthodes de fabrication d'un module composite de séparation de gaz. L'invention concerne également des méthodes pour séparer sélectivement du gaz hydrogène à partir d'un flux gazeux contenant du gaz hydrogène. Dans un mode de réalisation de l'invention, le module composite de séparation de gaz comprend un substrat métallique poreux ; une couche métallique poreuse intermédiaire, la couche métallique poreuse intermédiaire étant superposée au substrat métallique poreux ; et une membrane sélective par rapport à l'hydrogène dense. La membrane sélective par rapport à l'hydrogène dense est superposée à la couche métallique poreuse intermédiaire. La couche métallique poreuse intermédiaire peut comprendre du palladium et un métal du groupe IB. Par exemple, la couche métallique poreuse intermédiaire peut contenir des couches alternées de palladium et d'un métal du groupe IB.

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