Nitrogen oxide removal catalyst system and nitrogen oxide removal method
US7597865B2 · kind B2 · utility
10Cited by
6References
10Claims
0Family size
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Key dates
| Filing date | Feb 1, 2005 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Jul 23, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided in a catalyst system are: a first reaction part fitted with a first catalyst containing, as active constituents, at least, a complex oxide consisting of two or more oxides selected from among silica, alumina, titania, zirconia, and tungsten oxide, and a rare earth metal or transition metal (except Cu, Co, Ni, Mn, Cr, and V); and a second reaction part fitted with a second catalyst containing, as active constituents, at least, a noble metal and a silica-alumina type complex oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.