Method for treating engine exhaust by use of hydrothermally stable, low-temperature NOx reduction NH3-SCR catalysts
US9694352B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Sep 28, 2016 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Sep 28, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst composition includes a heterobimetallic zeolite characterized by a chabazite structure loaded with copper ions and at least one trivalent metal ion other than Al3+. The catalyst composition decreases NOx emissions in diesel exhaust and is suitable for operation in a catalytic converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.