Chemistry: electrical and wave energy – Processes and products
Patent
1984-03-27
1985-10-08
Metz, Andrew H.
Chemistry: electrical and wave energy
Processes and products
204 75, 204158R, C25B 304
Patent
active
045458723
ABSTRACT:
A process and apparatus for reducing carbon dioxide to at least one useful product includes two redox couple electrolyte solutions separated by a first membrane having photosensitizers. The carbon dioxide to be reduced is provided to a second membrane which is contiguous to one of the redox couple electrolyte solutions. The second membrane has photosensitizers and a catalyst. Water provides hdyrogen ions, which participate in the reduction of the carbon dioxide, via a separator. In operation both membranes are illuminated and produce excited photosensitizers which cause electron transfer from a first redox solution to a second redox solution and thence to the carbon dioxide in the second membrane thereby, in cooperation with the hydrogen ions, reducing at least some of the carbon dioxide at a surface of the second membrane to provide at least one product.
REFERENCES:
patent: 4219392 (1980-08-01), Halmann
patent: 4240882 (1980-12-01), Ang et al.
patent: 4381978 (1983-05-01), Gratzel et al.
patent: 4427508 (1984-01-01), Lichtin
patent: 4427749 (1984-01-01), Graetzel et al.
Pa Ang Peter G.
Sammells Anthony F.
Chapman Terryence
Gillespie Ronald G.
Kulason Robert A.
Metz Andrew H.
O'Loughlin James J.
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