Electrochemical co-production of chemicals with sulfur-based reactant feeds to anode
First Claim
1. A method for producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the electrochemical cell having an anode, the method comprising the steps of:
- contacting the first region with a catholyte comprising carbon dioxide;
contacting the second region with an anolyte comprising a sulfur-based reactant and a nitrogen-based reactant;
applying an electrical potential between the anode and the cathode sufficient to reduce carbon dioxide at the cathode to produce a first product recoverable from the first region and a second product recoverable from the second region;
removing the second product, an unreacted sulfur-based reactant and an unreacted nitrogen-based reactant from the second region;
recycling the unreacted sulfur-based reactant and the unreacted nitrogen-based reactant to the second region;
removing the first product from the first region;
reacting the first product with water to produce carbon dioxide; and
recycling the carbon dioxide to the first region.
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Accused Products
Abstract
The present disclosure includes a system and method for producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the electrochemical cell having an anode. The method may include a step of contacting the first region with a catholyte comprising carbon dioxide. The method may include another step of contacting the second region with an anolyte comprising a sulfur-based reactant. Further, the method may include a step of applying an electrical potential between the anode and the cathode sufficient to produce a first product recoverable from the first region and a second product recoverable from the second region. An additional step of the method may include removing the second product and an unreacted sulfur-based reactant from the second region and recycling the unreacted sulfur-based reactant to the second region.
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Citations
33 Claims
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1. A method for producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the electrochemical cell having an anode, the method comprising the steps of:
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contacting the first region with a catholyte comprising carbon dioxide; contacting the second region with an anolyte comprising a sulfur-based reactant and a nitrogen-based reactant; applying an electrical potential between the anode and the cathode sufficient to reduce carbon dioxide at the cathode to produce a first product recoverable from the first region and a second product recoverable from the second region; removing the second product, an unreacted sulfur-based reactant and an unreacted nitrogen-based reactant from the second region; recycling the unreacted sulfur-based reactant and the unreacted nitrogen-based reactant to the second region; removing the first product from the first region; reacting the first product with water to produce carbon dioxide; and recycling the carbon dioxide to the first region. - 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 producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the electrochemical cell having an anode, the method comprising the steps of:
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receiving a feed of carbon dioxide at the first region of the electrochemical cell; contacting the first region with a catholyte comprising carbon dioxide; receiving a feed of a sulfur-based reactant and a nitrogen-based reactant at the second region of the electrochemical cell; contacting the second region with an anolyte comprising the sulfur-based reactant and a nitrogen-based reactant; applying an electrical potential between the anode and the cathode sufficient to reduce carbon dioxide at the cathode to produce a first product recoverable from the first region and a second product recoverable from the second region; removing the second product, an unreacted sulfur-based reactant and an unreacted nitrogen-based reactant from the second region; recycling the unreacted sulfur-based reactant and the unreacted nitrogen-based reactant to the second region; removing the first product from the first region; reacting the first product with water to produce carbon dioxide; and recycling the carbon dioxide to the first region. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A system for electrochemical co-production of products, comprising:
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an electrochemical cell including; a first region; a cathode associated with the first region; a second region; an anode associated with the second region; and a separator for selectively controlling a flow of ions between the first region and the second region; a carbon dioxide source, the carbon dioxide source in flow communication with the first region to supply carbon dioxide to the first region; a sulfur-based reactant source, the sulfur-based reactant source in flow communication with the second region to supply a sulfur-based reactant to said second region; a nitrogen-based reactant source, the nitrogen-based reactant source in flow communication with the second region to supply a nitrogen-based reactant to said second region; an energy source for applying a current across the anode and the cathode, wherein when current is applied, a first product recoverable from the first region and a second product is recoverable from the second region; and a reactor for reacting the first product recoverable from the first region with water to produce carbon dioxide that is recycled to the first region. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A method for producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the electrochemical cell having an anode, the method comprising the steps of:
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contacting the first region with a catholyte, the catholyte consisting essentially of carbon dioxide, solvent, a catalyst and an electrolyte; contacting the second region with an anolyte comprising a nitrogen-based reactant; applying an electrical potential between the anode and the cathode sufficient to produce a first product recoverable from the first region and a second product recoverable from the second region; removing the second product and an unreacted nitrogen-based reactant from the second region; recycling the unreacted nitrogen-based reactant to the second region. removing the first product from the first region; reacting the first product with water to produce carbon dioxide; and recycling the carbon dioxide to the first region. - View Dependent Claims (31, 32, 33)
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Specification