Layered catalyst to improve selectivity or activity of manganese containing vanadium-free mobile catalyst
US7968492B2 · kind B2 · utility
7Cited by
13References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 2009 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Dec 1, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2255/9025
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Low temperature activity and high temperature ammonia selectivity of a vanadium-free selective catalytic reduction catalyst are controlled with a mixed oxide support containing oxides of titanium and zirconium, and a plurality of alternating layers respectively formed of a metal compound and titanium oxide present on the surface of the mixed oxide support. The metal compound is selected from the group consisting of manganese oxide, iron oxide, cerium oxide, tin oxide, and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.