Catalyst for treating waste gases
US4564604A · kind A · utility
11Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1984 |
| Grant date | Jan 14, 1986 |
| Priority date | — |
| Expiry date | Nov 15, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst for treating waste gases comprising nitrogen oxides, which catalyst comprises a protonized zeolite coating formed on the surface of a catalytic ingredient. This type of catalyst has a prolonged life and is very useful in treating waste gases comprising nitrogen oxides by adding ammonia to the waste gas and reducing the nitrogen oxides in the waste gas with the catalyst to render the nitrogen oxides non-noxious.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.