Process for removing nitrogen oxides from oxygen rich exhaust gas
US5449504A · kind A · utility
7Cited by
4References
3Claims
0Family size
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Key dates
| Filing date | Dec 3, 1993 |
| Grant date | Sep 12, 1995 |
| Priority date | — |
| Expiry date | Dec 3, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for removing nitrogen oxides from oxygen rich exhaust gas containing nitrogen oxides and hydrocarbons using a catalyst composed of at least one active metal and zeolite having a molar ratio of SiO.sub.2 /Al.sub.2 O.sub.3 of at least 15, treated with a vapor of at least one silicon compound selected from alkylchlorosilanes, alkoxysilanes, alkoxyalkylsilanes, and silicon tetrachloride or treated with an alkoxysilane or silicon tetrachloride in an organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.