Methods and materials for direct NOx decomposition in lean exhaust gases
US9999875B2 · kind B2 · utility
3Cited by
1References
11Claims
0Family size
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Key dates
| Filing date | Apr 27, 2016 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Apr 27, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A noble metal-free lanthanum transition metal perovskite catalyst material. The noble metal-free lanthanum transition metal perovskite catalyst material may include a two phase mixture of a lanthanum transition metal perovskite with an alkali or alkaline earth metal carbonate, a lanthanum transition metal perovskite doped with an alkali or alkaline earth metal, or a combination thereof. The lanthanum transition metal perovskite catalyst material provides direct decomposition of NOx into N2 and O2 without the presence of a noble metal and in the presence of excess O2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.