Exhaust gas cleaning catalyst, exhaust gas cleaning device, and system comprising internal combustion engine
US8011181B2 · kind B2 · utility
3Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 24, 2005 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Dec 29, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention makes use of an exhaust gas catalyst, comprising an active component comprising at least one type of metal from noble metals and transition metals; NOx-absorbing material for absorbing and releasing nitrogen oxides according to the surrounding nitrogen oxide concentration; and compounds represented by A2O2SO4 and/or A2O2S (A is a rare earth element).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.