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AssigneeAir Products and Chemicals, Inc.
InventorsMichael Francis Carolan, Paul Nigel Dyer, Stephen Mark Fine, Alexander Makitka, III, Robin Edward Richards, Leslie Errol Schaffer
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The present invention is a method for manufacturing inorganic membranes which are capable of separating oxygen from oxygen-containing gaseous mixtures. The membranes comprise a porous composite of a thin layer of a multicomponent metallic oxide which has been deposited onto a porous support wherein the pores of the multicomponent metallic oxide layer are subsequently filled or plugged with a metallic-based species. The inorganic membranes are formed by depositing a porous multicomponent metallic oxide layer onto the porous support to form a porous composite having a network of pores capable of transporting gases. The network of pores are plugged or filled by organometallic vapor infiltration to form an inorganic membrane having essentially no through porosity.
An inorganic membrane comprising a porous support, a contiguous mixed conducting multicomponent metallic oxide porous layer comprising pores, and plugs selected from the group consisting of a metallic oxide, a multicomponent metallic oxide, a metallic carbonate, and a metallic species, wherein the plugs are situated within the pores of the mixed conducting multicomponent metallic oxide porous layer, such that porosity is maintained;
Dependencies are inferred from the claim text.