Rare-earth metal vanadates catalysts for NOx reduction at low temperatures
US11554362B2 · kind B2 · utility
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Key dates
| Filing date | Dec 30, 2020 |
| Grant date | Jan 17, 2023 |
| Priority date | — |
| Expiry date | Apr 8, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2235/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided are catalysts for reduction of nitrogen oxides including an active site including lanthanum vanadate represented by at least one of Formula 1 and Formula 2 and a support carrying the active site. LaVO4 (wherein LaVO4 is polymorphous and has a tetragonal or monoclinic crystal structure) Formula 1LaV3O9 (wherein LaV3O9 has a monoclinic crystal structure) Formula 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.