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Electrochemical co-production of chemicals utilizing a halide salt

  • US 8,692,019 B2
  • Filed: 12/21/2012
  • Issued: 04/08/2014
  • Est. Priority Date: 07/26/2012
  • Status: Active Grant
First Claim
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1. A method for co-producing M-carboxylate and a halogen, the method comprising the steps of:

  • contacting a first region of an electrochemical cell having a cathode with a catholyte comprising carbon dioxide;

    contacting a second region of the electrochemical cell having an anode with an anolyte comprising an MX where M is at least one cation and X is selected from the group consisting of F, Cl, Br, I and mixtures thereof;

    applying an electrical potential between the anode and the cathode of the electrochemical cell sufficient to produce the M-carboxylate recoverable from the first region of the electrochemical cell and the halogen recoverable from the second region of the electrochemical cell;

    reacting the halogen from the second region of the electrochemical cell with one of an alkane, an alkene, or an aromatic to produce a halogenated compound and HX, the HX being recycled back to an acidification chamber;

    reacting the M-carboxylate with the HX via the acidification chamber to produce a carboxylic acid and MX, the MX being recycled to an input of the second region of the electrochemical cell.

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