Catalyst and method for making
US4137372A · kind A · utility
6Cited by
4References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Nov 23, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The rate of platinum recrystallization of a platinum supported on carbon catalyst is reduced by depositing porous carbon on and around the supported platinum crystallites. The reduced rate of platinum recrystallization results in higher platinum surface areas over a period of time and therefore improves the performance of the catalyst. The porous carbon can be deposited by any suitable technique, a preferred method being to heat the supported platinum in the presence of carbon monoxide to decompose the carbon monoxide thereby depositing carbon on and around the platinum crystallites.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.