Catalytic process for the decomposition of perfluoroalkanes
US6426443B1 · kind B1 · utility
6Cited by
28References
20Claims
0Family size
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Key dates
| Filing date | May 30, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | May 30, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62D2101/22
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process and composition for transforming perfluoroalkanes in the presence of an oxidizing agent and water at temperatures between about 400 to 1,000° C. Aluminum oxide is the primary agent for effecting this transformation. Additions of between 0.1 to 50% by weight of other components such as barium calcium, phosphorus, cerium, chromium, cobalt, iron, lanthanum, magnesium, nickel, silicon, titanium, yttrium or zirconium aid in extending the useful life of the catalyst. A preferred catalyst composition includes aluminum oxide with additions of cobalt and one or more of the elements of cerium, titanium or zirconium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.