Catalytic reduction of nitrogen oxides
US4224292A · kind A · utility
5Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1978 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Dec 5, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2255/20761
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Nitrogen oxides in exhaust gases are catalytically reduced in the presence of oxygen and ammonia at 200.degree. to 600.degree. C. over a catalyst of at least one catalyst component selected from the group consisting of compounds of metals of Groups 1B, 5A, 6A, 7A and 8 of the periodic table, and lanthanides and tin which is supported on a specific carrier comprising a main component of calcium silicate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.