Catalyst with stable nitric oxide (NO) oxidation performance
US11103855B2 · kind B2 · utility
5Cited by
10References
9Claims
0Family size
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Key dates
| Filing date | Feb 15, 2016 |
| Grant date | Aug 31, 2021 |
| Priority date | — |
| Expiry date | Feb 15, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of preparing a catalyst composition for producing a stable ratio of NO2 to NO in an exhaust system of a compression ignition engine is described. The method comprises: (i) preparing a first composition comprising a platinum (Pt) compound disposed or supported on a support material; (ii) preparing a second composition by reducing the platinum (Pt) compound to platinum (Pt) with a reducing agent; and (iii) heating the second composition to at least 650° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.