Exhaust gas purification catalyst and method for producing it
US9114384B2 · kind B2 · utility
1Cited by
21References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Aug 17, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N3/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The purpose of the present invention is to provide an exhaust gas purification catalyst which can decrease a NOx reduction temperature and comprises rhodium and gold. An exhaust gas purification catalyst which carries two-element microparticles each comprising rhodium and gold, said catalyst being characterized in that the rhodium and the gold are phase-separated from each other and the content ratio of the rhodium to the gold (i.e., rhodium:gold) is (30-99.9 at. %):(70-0.1 at. %) in the two-element microparticles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.