Catalyst based on ferrierite/iron for catalytic reduction of nitrous oxide
US7238641B2 · kind B2 · utility
1Cited by
7References
19Claims
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Key dates
| Filing date | Dec 1, 2003 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Nov 4, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst for reducing the nitrous oxide content in gas, which operates at relatively low temperatures, the activity of which is relatively insensitive to the presence of water vapor and which is highly resistant to hydrothermal degradation, is prepared from ferrierite exchanged with iron. Application to the treatment of gases with a low N2O content, such as gases resulting from plants for the manufacture of nitric acid, and of gases with a high N2O content, which are emitted during oxidations of organic compounds by nitric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.