Photocatalyst and process for purifying gas effluent by photocatalytic oxidation
US7435702B2 · kind B2 · utility
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13References
15Claims
0Family size
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Key dates
| Filing date | Oct 28, 2002 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Jun 6, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/91
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The photocatalyst based on a composite WO3—SiC/TiO2 semiconductor and subjected to radiation whose wavelength is at least partly less than 400 nm gives1 photocatalytic oxidation of volatile organic compounds and leads to their total mineralisation into CO2 and H2O.The process for the photocatalytic purification of industrial, agricultural or domestic gaseous effluent may be conducted at room pressure and temperature. Its conversion rate is high and stable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.