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US 4,668,349 AGranted
Acid promoted electrocatalytic reduction of carbon dioxide by square planar transition metal complexes
AssigneeThe Standard Oil Company
InventorsEdward A. Cuellar, Verna F. Gaylor
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Abstract
A process for the electrocatalytic reduction of carbon dioxide comprises immersing a transition metal complex with square planar geometry into an aqueous or nonaqueous solution which has been acidified to a hydrogen ion concentration of from about 10.sup.-5 M to about 10.sup.-1 M, adding the carbon dioxide, applying an electrical potential of from about -0.8 volts to about -1.5 volts vs. SCE, and reducing the carbon dioxide to carbon monoxide.
Claims14
A process for the electrocatalytic reduction of carbon dioxide in an electrochemical cell having at least one working electrode which comprises:
- adding carbon dioxide to said cell containing an aqueous or nonaqueous solution which has been acidified to a hydrogen ion concentration of from about 10.sup.-5 M to about 10.sup.-1 M;
- applying an electrical potential to said working electrode of from about -0.8 volts to about -1.5 volts vs. SCE;
- and,
- reducing said carbon dioxide to carbon monoxide;
- wherein said working electrode carries a transition metal complex with square planar geometry which is immersed in said solution.
2 more elements
Dependencies are inferred from the claim text.