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:
Jan. 07, 2003
Filed:
Jan. 08, 2001
Bent Vigeland, Porsgrunn, NO;
Rita Glenne, Porsgrunn, NO;
Turid Breivik, Porsgrunn, NO;
Stein Julsrud, Skien, NO;
Norsk Hydro ASA, Oslo, NO;
Abstract
The present invention relates to a dense single-phase membrane having both high ionic and electronic conductivity and capable of separating oxygen from an oxygen containing gaseous mixture, where the membrane comprises a mixed metal oxide material with interstitial oxygen excess represented by the formula A A′ A″ B B′ B″ B′″ O , where A, A′ and A″ are chosen from group 1, 2 and 3 and the lanthanides; and B, B′, B″ and B′″ are chosen from the transition metals according to the periodic table of the elements adopted by IUPAC wherein 0≦y≦2, 0≦y′≦2, 0≦y″≦2, 0≦x≦1, 0≦x′≦1, 0≦x″≦1, 0≦x′″≦1, and x and y each represents a number such that y+y′+y″=2, x+x′+x″+x′″=1, and &dgr; is a number where 0≦&dgr;<1 quantifying the oxygen excess. Furthermore, the invention relates to a use of the membrane for production of pure oxygen, oxygen enrichment of a sweep gas for fossil energy conversion, for synthesis gas production and for production of oxygen for application in any catalytic or non-catalytic processes wherein oxygen is one of the reactants.