High permeance sulfur tolerant Pd/Cu alloy membranes
US8652239B2 · kind B2 · utility
1Cited by
66References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 2011 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Apr 6, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2203/0405
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of making a membrane permeable to hydrogen gas (H2↑) is disclosed. The membrane is made by forming a palladium layer, depositing a layer of copper on the palladium layer, and galvanically displacing a portion of the copper with palladium. The membrane has improved resistance to poisoning by H2S compared to a palladium membrane. The membrane also has increased permeance of hydrogen gas compared to palladium-copper alloys. The membrane can be annealed at a lower temperature for a shorter amount of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.