Electrochemical co-production of chemicals utilizing a halide salt
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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Abstract
The present disclosure includes a system and method for co-producing a first product and a second product. The system may include a first electrochemical cell, at least one second reactor, and an acidification chamber. The method and system for co-producing a first product and a second product may include co-producing a carboxylic acid and at least one of an alkene, alkyne, aldehyde, ketone, or an alcohol while employing a recycled halide salt.
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Citations
27 Claims
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1. A method for co-producing M-carboxylate and a halogen, the method comprising the steps of:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for co-producing M-carboxylate and a halogen, the method comprising the steps of:
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contacting a first region of a first electrochemical cell having an cathode with a catholyte comprising carbon dioxide; contacting a second region of a first 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 co-produce the M-carboxylate recoverable from the first region of the first electrochemical cell and the halogen recoverable from the second region of the first electrochemical cell; reacting the halogen with at least one of an alkane, alkene, or aromatic to form a halogenated compound and HX via a secondary reactor, the HX being recycled to an input of a second region of an electrochemical acidification cell; reacting the halogenated compound with a caustic compound to form MX and the second product via a third reactor, the MX recycled to an input of the second region of the electrochemical cell; contacting a first region of the electrochemical acidification cell having an cathode with a catholyte comprising water; contacting a second region of the electrochemical acidification cell having an anode with an anolyte comprising HX; contacting an acidification region of the electrochemical acidification cell with M-carboxylate; applying an electrical potential between the anode and the cathode of the electrochemical acidification cell sufficient to produce the first product, a carboxylic acid, recoverable from the acidification region of the electrochemical acidification cell, a halogen recoverable from the second region of the electrochemical acidification cell, H2 recoverable from the first region of the electrochemical acidification cell, and a caustic compound, the caustic compound recycled as an input to the third reactor. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A method for co-producing M-carboxylate and bromine, the method comprising the steps of:
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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 MBr where M is at least one cation; 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 bromine recoverable from the second region of the electrochemical cell; reacting the bromine from the second region of the electrochemical cell with an alkane to produce a halogenated compound and HBr, the HBr being recycled back to an acidification chamber; reacting the M-carboxylate with the HBr via the acidification chamber to produce a carboxylic acid and MBr, the MBr being recycled to an input of the second region of the electrochemical cell. - View Dependent Claims (25, 26, 27)
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Specification