Catalysts for adsorption of hydrocarbons
US5407880A · kind A · utility
46Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Nov 5, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst for the adsorption of hydrocarbons is used in an apparatus for the purification of exhaust gas from an internal engine and comprises a honeycomb monolith carrier, a first layer of at least one zeolite having a different crystalline structure, a second layer containing at least one of Pt and Pd as a catalytic component, and a third layer containing Rh as a catalytic component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.