Catalyst for the reduction of oxides of nitrogen
US4735930A · kind A · utility
40Cited by
8References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 18, 1986 |
| Grant date | Apr 5, 1988 |
| Priority date | — |
| Expiry date | Feb 18, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J29/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst for the selective reduction of nitrogen oxides to nitrogen in the presence of ammonia in the form of composite bodies formed from a mixture of zirconia (5 to 50% by weight), a zeolite (50 to 90%), a bond material (0 to 30%), and, optionally, a promoter selected from oxides of vanadium and copper in the amount of at least 0.1% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.