Process for the production of hydrogen by means of heterogeneous photoredox catalysis
US4484992A · kind A · utility
20Cited by
5References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 25, 1982 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Jan 25, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is described for the selective production of hydrogen by means of heterogeneous photoredox catalysis, in which mixtures of water and alkali metal sulfites or sulfides, alkaline earth metal sulfites or sulfides or ammonium sulfites or sulfides are reacted under the action of light in a suspension of a cadmium sulfide, cadmium sulfoselenide or titanium dioxide/semiconductor powder which is at least partially coated with Cu, Cr, Ni, Co or a noble metal or mixtures thereof. The catalysts which can be employed in this process (coated semiconductor powders) are in some cases novel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.