Catalyst of a coating on an alloy substrate
US4096095A · kind A · utility
49Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1977 |
| Grant date | Jun 20, 1978 |
| Priority date | — |
| Expiry date | Apr 4, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B1/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst suitable for treating automobile exhaust emissions comprises an Al-containing Fe-base alloy substrate with a protective coating of, e.g., Al.sub.2 O.sub.3 and Cr.sub.2 O.sub.3 and a second coating of, e.g., Al.sub.2 O.sub.3 and a Pt-group metal. The coatings may be applied using sols obtained by dispersing Al.sub.2 O.sub.3, prepared by vapor phase condensation methods, in water and having appropriate convertible salts dissolved therein, followed by firing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.