NiO catalyst configurations, methods for making NOx adsorbers, and methods for reducing emissions
US6930073B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2002 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Mar 9, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In one embodiment, a catalyst configuration, comprises: a substrate, a NiO layer disposed on the substrate, wherein the NiO layer comprises greater than or equal to about 75 wt % of the NiO in the catalyst configuration; and a catalyst layer comprising a NOx adsorbing catalyst. In another embodiment, a catalyst configuration, comprises: a substrate, a catalyst layer disposed on the substrate, wherein the catalyst layer comprises a NOx adsorbing catalyst and thermally treated NiO.In one embodiment, the method for making a NOx adsorber comprises: thermally treating NiO to a temperature of about a maximum catalyst application temperature minus 100° C. and the maximum catalyst application temperature, disposing a catalyst configuration on the substrate, wherein the catalyst configuration comprises the thermally treated NiO and a NOx adsorption catalyst, and disposing the substrate in a housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.