Selective removal of nitrogen oxides from waste gas
US3993731A · kind A · utility
10Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1975 |
| Grant date | Nov 23, 1976 |
| Priority date | — |
| Expiry date | Jun 9, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J27/053
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the removal of nitrogen oxides from a waste gas containing said oxides in conjunction with sulfur oxides which comprises contacting said waste gas with ammonia as a reducing agent at temperatures of from 250.degree. to 550.degree. C in the presence of a catalyst wherein an active component containing iron or copper as the active metal and a sulfate of aluminum are supported on a silica carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.