Co2 utilization in electrochemical systems

Details Co2 utilization in electrochemical systems Co2 utilization in electrochemical systems

C - Chemistry, Metallurgy

25

B

C25B 1/16 (2006.01)

Patent

CA 2700768

A low-voltage, low-energy electrochemical system and method of removing protons and/or producing a base solu-tion comprising hydroxide and carbonate/bicarbonate ions, utilizing carbon dioxide in a cathode compartment that is partitioned into a first cathode electrolyte compartment and a second cathode electrolyte compartment such that liquid flow between the cath-ode electrolyte compartments is possible, but wherein gaseous communication between the cathode electrolyte compartments is restricted. Carbon dioxide gas in one cathode electrolyte compartment is utilized with the cathode electrolyte in both compart-ments to produce the base solution with less that 3V applied across the electrodes.

Linvention concerne un système électrochimique à basse tension et à faible énergie et un procédé de retrait des protons et/ou de production dune solution basique comprenant des ions hydroxyde et carbonate/bicarbonate, utilisant le dioxyde de carbone dans un compartiment de cathode qui est partitionné en un premier compartiment délectrolyte de cathode et un second compartiment délectrolyte de cathode de telle sorte que la circulation de liquide entre les compartiments délectrolyte de cathode soit possible la communication gazeuse entre les compartiments délectrolyte de cathode étant toutefois restreinte. Le dioxyde de carbone gazeux dans un compartiment délectrolyte de cathode est utilisé avec lélectrolyte de cathode dans les deux compartiments pour produire la solution basique avec moins de 3 V appliqué entre les électrodes.

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