The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2013
Filed:
Feb. 21, 2009
Stefan Baumann, Aachen, DE;
Jose Manuel Serra Alfaro, Valencia, ES;
Wilhelm Albert Meulenberg, AA Vijlen, NL;
Hans-peter Buchkremer, Heinsberg, DE;
Detlev Stoever, Niederzier, DE;
Stefan Baumann, Aachen, DE;
Jose Manuel Serra Alfaro, Valencia, ES;
Wilhelm Albert Meulenberg, AA Vijlen, NL;
Hans-Peter Buchkremer, Heinsberg, DE;
Detlev Stoever, Niederzier, DE;
Forschungszentrum Juelich GmbH, Juelich, DE;
Abstract
A composite membrane for selective gas separation, comprises a layer system having a continuously porous, mechanically stable carrier layer, which has an average pore size in the μm range, further having at least one continuously porous intermediate layer, which is disposed on the carrier layer and has an average pore size in the range of 2 to 200 nm, and further having a gastight functional layer, which is disposed on the intermediate layer and is made of a mixed-conductive material having a maximum layer thickness of 1 μm. The carrier layer comprises a structural ceramic, a metal, or a cermet and has a layer thickness of no more than 1 mm. The intermediate layer is present with a total layer thickness of no more than 100 μm and has an average pore size in the range of 10 to 100 nm. The functional layer comprises a perovskite, a fluorite, or a material having a KNiFstructure, such as LaSrCoFeO(LSCF). The layer thickness of the functional layer is no more than 50 nm, and particularly between 25 and 400 nm. In order to produce this composite membrane, at least one porous intermediate layer is applied onto a continuously porous, mechanically stable carrier layer, which has an average pore size in the μm range, wherein the intermediate layer has an average pore size in the range of 2 to 200 nm. A further gastight, functional layer made of a mixed-conductive material and having a maximum layer thickness of 1 μm is applied onto the intermediate layer.