Selective catalytic reduction of N2O
US7951742B2 · kind B2 · utility
6Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2008 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Sep 11, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gas stream containing nitrous oxide and ammonia is contacted with a catalyst composition containing a zeolite. N2O is reduced to N2 and H2O at low temperatures in a highly efficient manner. Ammonia-mediated reduction of nitrous oxide can be effectuated from gas streams having N2O concentrations as low as 1%. The gas stream may also contact a catalytic composition selective for the reduction of NOx. In this way, N2O and NOx treatment may be effectuated in a single process stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.