Polymer-zeolite nanocomposite membranes for proton-exchange-membrane fuel cells
US7691514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2004 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Aug 9, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A suite of polymer/zeolite nanocomposite membranes. The polymer backbone is preferably a film forming fluorinated sulfonic acid containing copolymer, such as a Teflon type polymer, a perfluorinated polymer, or a perfluorinated polymer with sulfonic groups. The zeolites formed in accordance with the present invention and which are used in the membranes are plain, phenethyl functionalized and acid functionalized zeolite FAU(Y) and BEA nonocrystals. The zeolite nanocrystals are incorporated into polymer matrices for membrane separation applications like gas separations, and in polymer-exchange-membrane fuel cells. For the purpose of developing zeolite-polymer nanocomposite membranes, the zeolite nanocrystals are size-adjustable to match the polymer-network dimensions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.