Catalyst for simultaneous NO decomposition and CO oxidation under cycled operating conditions
US4839146A · kind A · utility
23Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Apr 15, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to an automotive exhaust gas treatment catalyst composed of one or more noble metals dispersed on CeO.sub.2 -RE.sub.2 O.sub.3 carrier particles. The ceria-rare earth oxide carrier for the noble metal facilitates the simultaneous oxidation of CO and decomposition of NO. The catalyst is particularly useful when the air-fuel mixture to the automobile engine is continually cycled between fuel rich and fuel lean of stoichiometric proportions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.