Process for producing carbon black having affixed nitrogen
US5476826A · kind A · utility
26Cited by
10References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 2, 1993 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Aug 2, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst material of carbon black powder having nitrogen affixed to its surface and process for its production by contacting carbon black powder particles with a plasma or low energy beam of nitrogen containing ions affixing the nitrogen ions to the surface of the particles in a concentration of about 0.1 to about 10 percent, based upon the total number of surface atoms. The catalysts are particularly suited for use in phosphoric acid fuel cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.