Composite materials for membrane reactors

Details Composite materials for membrane reactors Composite materials for membrane reactors

B - Operations, Transporting

01

D

B01D 53/22 (2006.01) B01D 53/32 (2006.01) B01D 63/06 (2006.01) B01D 71/02 (2006.01) B01J 19/24 (2006.01) C01B 3/36 (2006.01) C01B 13/02 (2006.01) C04B 38/00 (2006.01) C23C 8/10 (2006.01)

Patent

CA 2276021

The present invention relates to composite materials for membrane reactors which include a gas-tight ceramic (28), a porous support (15, 16), and an interfacial zone therebetween. More particularly, this invention relates to composite materials using oxygen ion-conducting dense ceramic membranes (28) formed on a porous support (i5, 16) comprising a metallic alloy to provide an interfacial zone identifiable by a gradient of composition in at least one metallic element across the interfacial zone between the dense ceramic membrane and the porous support. Processes using composite materials in accordance with the invention are, for example, used for production of synthesis gas comprising carbon monoxide and molecular hydrogen which synthesis gas is, advantageously, free of deleterious and/or inert gaseous diluents such as nitrogen.

Cette invention concerne des matériaux composites pour réacteurs à membrane comprenant une céramique (28) étanche aux gaz et un support poreux (15, 16) séparés par une zone interfaciale. Plus particulièrement, cette invention a trait à des matériaux composites faisant appel à des membranes de céramique dense (28) qui conduisent les ions oxygène; ces membranes sont formées sur un support poreux (15, 16) comprenant un alliage métallique constituant une zone interfaciale reconnaissable à un gradient de composition dans au moins un élément métallique sur toute la zone interfaciale entre la membrane de céramique dense et le support poreux. Les procédés qui font appel à des matériaux composites dans les termes définis par cette invention interviennent, par exemple, dans la production d'un gaz de synthèse tel que le monoxyde de carbone et l'hydrogène moléculaire, lequel gaz de synthèse offre l'avantage d'être exempt de diluants gazeux délétères et/ou inertes tels que l'azote.

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