Alkali metal/alkaline earth lean NOx catalyst
US6624113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Jul 7, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/0246
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
One embodiment of a non-precious metal catalyst for treating an exhaust gas stream comprises an alkali metal oxide component comprising lithium oxide, in combination with an alkaline earth support component, wherein the alkaline earth support component is an alkaline earth zeolite catalyst, an alkaline earth alumina catalyst, or a mixture thereof. Another embodiment of a non-precious metal catalyst for treating an exhaust gas stream comprises a substrate supporting a coating having more than about 6 weight percent of a lithium oxide component in combination with less than about 49 weight percent of an barium zeolite catalyst component and less than about 42 weight percent of a barium alumina catalyst component and not more than about 7 weight percent of a ceramic oxide binder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.