Catalyst-containing oxygen transport membrane
US11052353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2017 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Jun 7, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2237/765
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is described of producing a catalyst-containing composite oxygen ion membrane and a catalyst-containing composite oxygen ion membrane in which a porous fuel oxidation layer and a dense separation layer and optionally, a porous surface exchange layer are formed on a porous support from mixtures of (Ln1−xAx)wCr1−yByO3−δ and a doped zirconia. Adding certain catalyst metals into the fuel oxidation layer not only enhances the initial oxygen flux, but also reduces the degradation rate of the oxygen flux over long-term operation. One of the possible reasons for the improved flux and stability is that the addition of the catalyst metal reduces the chemical reaction between the (Ln1−xAx)wCr1−yByO3−δ and the zirconia phases during membrane fabrication and operation, as indicated by the X-ray diffraction results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.