Oxygen separation through hydroxide-conductive membrane
US6541159B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1999 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Aug 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A solid-state hydroxide (OH−) conductive membrane provides up to five times higher ionic conductivity and surface oxygen exchange rate than conventional MIEC membranes, while operating at significantly lower temperatures and providing reduced overall system cost. The hydroxide conductive membrane utilizes a porous ceramic backbone, pores of which are injected with an electrolyte. A catalyst is provided as discrete layers disposed at the anode and cathode. The membrane of the present invention may be utilized in combination with an external voltage source to drive the oxygen generating reaction. Alternatively, the pores may be metallized and a pressure gradient utilized to drive the reaction. The membrane thus provides discrete materials to provide ionic conduction, electronic conduction, and structural support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.