Method and compound for the selective adsorption of nitrogen oxides
US6379432B1 · kind B1 · utility
2Cited by
4References
21Claims
0Family size
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Key dates
| Filing date | Apr 17, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Apr 17, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S95/90
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for selectively absorbing nitrogen oxides NOx from gaseaous mixtures containing carbon dioxide or carbon dioxide and water and optionally contaminants chosen among CO, SO2, hydrocarbons and mixtures thereof, comprising placing the gaseous mixtures in contact with absorber compounds having formula Ba2Cu3O5+d, where d is a number from 0.6 to 1. New compounds having the above formula are characterized by high resistance to carbonatation and by specific Raman spectra.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.