Electrochemical conversion of carbon dioxide
AssigneeSaudi Arabian Oil Company
InventorsAhmad D. Hammad, Issam T. Amr
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Abstract
A system and method for feeding carbon dioxide to a first cathode cavity of a first electrochemical cell, electrochemically reducing the carbon dioxide at a first cathode in the first electrochemical cell to carbon monoxide (CO), flowing the CO from the first cathode cavity to a second cathode cavity of a second electrochemical cell, and forming at least one of ethanol or ethylene from the CO at a second cathode in the second electrochemical cell. The forming of the at least one of ethanol or ethylene from the CO may involve dimerization of the CO at the second cathode to form CO dimer.
Claims10
A method comprising:
- feeding carbon dioxide to a first cathode cavity of a first electrochemical cell;
- electrochemically reducing the carbon dioxide at a first cathode in the first electrochemical cell to carbon monoxide (CO);
- flowing the CO from the first cathode cavity to a second cathode cavity of a second electrochemical cell, wherein the first electrochemical cell and the second electrochemical cell share a housing and are coupled to form an electrochemical two-cell apparatus, wherein the first cathode cavity and the second cathode cavity are separated by a partial barrier disposed in the housing and connected via a gap, thereby allowing for flow of the CO from the first cathode cavity to the second cathode cavity within the electrochemical two-cell apparatus through the gap, and wherein the gap is not part of the partial barrier;
- and
- forming at least one of ethanol or ethylene from the CO at a second cathode in the second electrochemical cell.
Dependencies are inferred from the claim text.