Catalyst for treatment of exhaust gases from an internal combustion engine
US5643543A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1995 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Jan 31, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst for the treatment of exhaust gases from an internal combustion engine comprises a support including a porous layer which latter includes at least one inorganic refractory oxide and an active phase containing at least cerium, iron and platinum, characterized in that said porous layer comprises at least the following percentages by weight PA1 0.3% to 4.4% of cerium; PA1 0.1% to 3.5% of iron; and PA1 0.0003% to 0.04% of platinum; and PA1 the complement to 100% being constituted by at least one inorganic refractory oxide. The catalyst can be used in the treatment of exhaust gases from compression ignition engines, in particular from commercial vehicles with an unladen weight of 3.5 metric tons or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.