Catalyst for purifying exhaust gas
US5141906A · kind A · utility
15Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1991 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Jun 28, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst for purifying an exhaust gas comprising a zeolite catalyst ion-exchanged with a transition metal, which is heat-treated in a gas stream containing a sulfur oxide, optionally followed by washing with a glycol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.