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Carbon dioxide capture and conversion to organic products

  • US 8,658,016 B2
  • Filed: 07/05/2012
  • Issued: 02/25/2014
  • Est. Priority Date: 07/06/2011
  • Status: Active Grant
First Claim
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1. A method for electrochemical conversion of carbon dioxide, comprising:

  • (A) introducing a solvent to a first compartment of an electrochemical cell, the first compartment including an anode, the electrochemical cell including a second compartment containing a cathode;

    (B) capturing carbon dioxide with at least one of 1,1,3,3-tetramethylguanidine, 1,5,7-triazabicyclo[4.4.0]dec-5-ene, 7-methyl-1,5,7triazabicyclo[4.4.0]dec-5-ene, 1,8-diazabicyclo[5.4.0]undec-7-ene, 1,5-diazabicyclo[4.3.0]non-5-ene, and 1,4,5,6-tetrahydropyrimidine to form a carbamic zwitterion;

    (C) introducing the carbamic zwitterion to the second compartment via at least one of (i) forming the carbamic zwitterion in the second compartment or (ii) delivering the carbamic zwitterion to the second compartment; and

    (D) applying an electrical potential between the anode and the cathode sufficient for the cathode to reduce the carbamic zwitterion to a product mixture, the product mixture including an organic product derived in part from the carbon dioxide.

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