Catalyst powder, exhaust gas purifying catalyst, and method of producing the catalyst powder
US7713911B2 · kind B2 · utility
19Cited by
85References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 15, 2005 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Apr 1, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/031
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of producing catalyst powder of the present invention has a step of precipitating a transition metal particle and a base-metal compound in a reversed micelle substantially simultaneously, and a step of precipitating a noble metal particle in the reversed micelle. By this method, it is possible to obtain catalyst powder which restricts an aggregation of noble metal particles even at the high temperature and is excellent in the catalytic activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.