Ceramic member with oxygen ion conductivity and use thereof

Details Ceramic member with oxygen ion conductivity and use thereof Ceramic member with oxygen ion conductivity and use thereof

B - Operations, Transporting

01

D

B01D 53/22 (2006.01) B01D 71/02 (2006.01) B01J 19/24 (2006.01) C01B 3/36 (2006.01) C01B 3/38 (2006.01) C01B 13/02 (2006.01) C07C 5/48 (2006.01)

Patent

CA 2466484

It is an object of the present invention to provide a ceramic member with excellent balance between oxygen ion conductivity and endurance (resistance to cracking and the like), an oxygen ion permeation module and a chemical reactor such as an oxygen separator, using such a ceramic member. The ceramic member with oxygen ion conductivity in accordance with the present invention has a perovskite- type crystal structure and a composition represented by the general formula (Ln1-x M x)(T1 1-y Fe y)O3 (where Ln represents at least one element selected from lanthanoids, and M represents at least one element selected from the group containing Sr, Ca, and Ba, 0 < x < 1, 0.4 <= y < 1, x + y >= 1). The oxygen ion permeation module composed by employing such a ceramic member can be used as a structural component of an oxygen separator, an oxidation reactor (for example, a reactor for partial oxidation of hydrocarbons), and the like.

L'invention concerne un matériau céramique conducteur d'ions oxygène possédant une structure de type pérovskite et une composition représentée par la formule générale (Ln1-xMx) (Ti1-yFey)O3, dans laquelle Ln désigne au moins un élément sélectionné dans le groupe des lanthanides, M désigne au moins un élément sélectionné dans le groupe comprenant Sr, Ca et Ba, 0<x<1, 0,4</=y<1, et x+y>/=1 ; un module perméable aux ions oxygène comprenant ledit matériau céramique ; ainsi qu'un appareil pour réaction chimique, tel qu'une unité de séparation d'oxygène, utilisant ledit module. Le matériau céramique de l'invention présente un excellent rapport entre la conductivité d'ions oxygène et la durabilité (tendance réduite au craquage). Le module perméable aux ions oxygène de l'invention, comprenant ledit matériau céramique, peut être utilisé comme composant dans une unité de séparation d'oxygène, un appareil d'oxydation (tel qu'un appareil de réaction destiné à l'oxydation partielle d'un hydrocarbure) et analogue.

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