Ion transport membranes with catalyzed dense layer

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 53/22 (2006.01) B01D 53/86 (2006.01) B01D 71/02 (2006.01) B01J 23/00 (2006.01) B01J 23/78 (2006.01) B01J 23/83 (2006.01) B01J 23/89 (2006.01) B01J 35/02 (2006.01) B01J 37/02 (2006.01) C01B 13/02 (2006.01) C01B 17/04 (2006.01) C01B 21/02 (2006.01)

Patent

CA 2139604

The present invention relates to surface catalyzed ion transport membranes which demonstrate superior oxygen flux. The membranes comprise a dense multicomponent metallic oxide layer having a first surface and a second surface wherein the first surface is coated with a catalyst such as a metal or an oxide of a metal selected from Groups II, V, VI, VII, VIII, IX, X, XI, XV and the F Block lanthanides of the Periodic Table of the Elements. One or more porous layers formed from a mixed conducting multicomponent metallic oxide or a material whichis not mixed conducting under process operating conditions may be formed contiguous to the second surface of the dense layer. The claimed membranes are capable of separating oxygen from oxygen-containing gaseous mixtures.

La présente invention porte sur des membranes pour le transport d'ions, avec catalyse en surface, qui donnent un flux supérieur en oxygène. Les membranes comprennent une couche dense à base d'oxyde métallique et d'autres constituants, possédant une première surface et une seconde surface; la première surface est revêtue d'un catalyseur à base d'un métal ou d'un oxyde d'un métal sélectionné dans les Groupes II, V, VI, VII, VIII, IX, X, XI, XV et dans le bloc F des lanthanides du Tableau périodique. Une ou plusieurs couches poreuses, contiguës à la seconde surface de la couche dense, peuvent être formées à partir d'un mélange conducteur d'oxydes métalliques à composantes multiples ou d'un matériau non mixte, mais conducteur dans les conditions opératoires du procédé. Les membranes revendiquées permettent de séparer l'oxygène de mélanges gazeux qui en renferment.

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