Hydrogen-permeable metal membrane and method for producing the same
US6152995A · kind A · utility
112Cited by
33References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Mar 22, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/108
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A hydrogen-permeable metal membrane with increased hydrogen flux compared to conventional metal membranes is disclosed. Without sacrificing selectivity, the membrane enables a greater throughput of purified hydrogen. A method for preparing the invention includes at least one etching step in which a controlled volume of etchant is used to selectively remove material from the membrane's surface. Methods for repairing holes or other defects in the membrane are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.