ELECTROLYSIS SYSTEM FOR ELECTROCHEMICAL UTILIZATION OF CARBON DIOXIDE WITH PROTON-DONATING UNIT AND METHOD OF RESTORE Russian patent published in 2019 - IPC C25B15/08 C25B1/22 C25B3/04 C25B9/08 

FIELD: chemistry.

SUBSTANCE: invention relates to an electrolysis system for recycling carbon dioxide, comprising electrolysis cell (6, 7, 8, 9) with anode (A) in anode space (AR), cathode (K) in cathode space (KR) and first and second membranes (M1, M2), wherein cathode space (KR) has first inlet for carbon dioxide (CO₂) and is configured to drive incoming carbon dioxide (CO₂) into contact with cathode (K), wherein the electrolysis system contains a proton-donor unit, and the cathode space (KR) is connected to the proton-donor unit through the second proton input (H⁺), which is configured to bring protons (H) into the cathode space (KR)⁺ into contact with cathode (K), wherein proton-donor unit comprises proton reservoir (PR) and proton-permeable membrane (M2), which acts as second input for protons (H⁺) into cathode space (KR), wherein first membrane (M1) is located between anode (A) and cathode (K), and second membrane (M2) is located between cathode (K) and proton reservoir (PR), and at least second membrane (M2) is proton-permeable. Invention also relates to a recovery method for recycling carbon dioxide.

EFFECT: use of the present invention enables to control the absolute concentration of carbon dioxide in the liquid phase, but primarily local accessibility of physically dissolved carbon dioxide in close proximity to the surface of the electrode.

13 cl, 1 tbl, 9 dwg