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US 9,187,834 B2Granted
Electrochemical hydroxide systems and methods using metal oxidation
AssigneeCalera Corporation
InventorsThomas A. Albrecht, Ryan J. Gilliam, Bryan Boggs, Kyle Self, Dennis W. Solas, Michael Kostowskyj, Margarete K. Leclerc, Alexander Gorer, Michael Joseph Weiss
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Abstract
There are provided methods and systems for an electrochemical cell including an anode and a cathode where the anode is contacted with a metal ion that converts the metal ion from a lower oxidation state to a higher oxidation state. The metal ion in the higher oxidation state is reacted with hydrogen gas, an unsaturated hydrocarbon, and/or a saturated hydrocarbon to form products.
Claims26
A method, comprising:
- contacting an anode with an anode electrolyte wherein the anode electrolyte comprises saltwater and metal halide;
- applying a voltage to the anode and cathode and oxidizing the metal halide from a lower oxidation state to a higher oxidation state at the anode wherein no gas is formed at the anode;
- contacting the cathode with a cathode electrolyte;
- and
- halogenating an unsaturated hydrocarbon or a saturated hydrocarbon with the anode electrolyte comprising the metal halide in the higher oxidation state, in an aqueous medium wherein the aqueous medium comprises more than 25 wt % water to result in a halohydrocarbon and the metal halide in the lower oxidation state, wherein yield of the halohydrocarbon is more than 80% by weight.
2 more elements
A method, comprising:
- contacting an anode with an anode electrolyte wherein the anode electrolyte comprises saltwater and copper halide;
- applying a voltage to the anode and cathode and oxidizing the copper halide from a lower oxidation state to a higher oxidation state at the anode wherein no gas is formed at the anode;
- contacting the cathode with a cathode electrolyte;
- and
- reacting ethylene with the anode electrolyte comprising the copper halide in the higher oxidation state, in an aqueous medium wherein the aqueous medium comprises more than 25 wt % water, to form ethylene dichloride wherein yield of the ethylene dichloride is more than 80% by weight.
2 more elements
Dependencies are inferred from the claim text.