Reduction of carbon dioxide to carboxylic acids, glycols, and carboxylates
First Claim
1. A method for electrochemical conversion of carbon dioxide, comprising:
- (A) introducing a liquid to a first compartment of an electrochemical cell, the first compartment including an anode;
(B) introducing carbon dioxide to a second compartment of the electrochemical cell, the second compartment including a solution of an electrolyte, a cathode, and a homogenous heterocyclic amine catalyst, wherein each bond of the homogenous heterocyclic amine catalyst is selected from the group consisting of;
a carbon-carbon bond, a carbon-hydrogen bond, a carbon-nitrogen bond, a carbon-oxygen bond, a carbon-sulfur bond, a nitrogen-hydrogen bond, a nitrogen-nitrogen bond, a nitrogen-oxygen bond, and an oxygen-hydrogen bond;
(C) applying an electrical potential between the anode and the cathode sufficient for the cathode to reduce the carbon dioxide to at least a carboxylate;
(D) acidifying the carboxylate to convert the carboxylate into a carboxylic acid;
(E) extracting the carboxylic acid; and
(F) contacting the carboxylic acid with hydrogen to form a reaction product.
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Abstract
Methods and systems for electrochemical conversion of carbon dioxide to carboxylic acids, glycols, and carboxylates are disclosed. A method may include, but is not limited to, steps (A) to (D). Step (A) may introduce water to a first compartment of an electrochemical cell. The first compartment may include an anode. Step (B) may introduce carbon dioxide to a second compartment of the electrochemical cell. The second compartment may include a solution of an electrolyte and a cathode. Step (C) may apply an electrical potential between the anode and the cathode in the electrochemical cell sufficient to reduce the carbon dioxide to a carboxylic acid intermediate. Step (D) may contact the carboxylic acid intermediate with hydrogen to produce a reaction product.
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Citations
10 Claims
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1. A method for electrochemical conversion of carbon dioxide, comprising:
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(A) introducing a liquid to a first compartment of an electrochemical cell, the first compartment including an anode; (B) introducing carbon dioxide to a second compartment of the electrochemical cell, the second compartment including a solution of an electrolyte, a cathode, and a homogenous heterocyclic amine catalyst, wherein each bond of the homogenous heterocyclic amine catalyst is selected from the group consisting of;
a carbon-carbon bond, a carbon-hydrogen bond, a carbon-nitrogen bond, a carbon-oxygen bond, a carbon-sulfur bond, a nitrogen-hydrogen bond, a nitrogen-nitrogen bond, a nitrogen-oxygen bond, and an oxygen-hydrogen bond;(C) applying an electrical potential between the anode and the cathode sufficient for the cathode to reduce the carbon dioxide to at least a carboxylate; (D) acidifying the carboxylate to convert the carboxylate into a carboxylic acid; (E) extracting the carboxylic acid; and (F) contacting the carboxylic acid with hydrogen to form a reaction product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification