Patent ID: 8906219

Claim:
A method of electrochemical production of carbon monoxide, the method comprising: heating alkaline metal carbonate salts or a mixture of alkaline and alkaline earth metal carbonate salts to form molten carbonates; performing an electrolysis of said molten carbonates while optionally injecting a gas comprising carbon dioxide to said molten carbonates, wherein said electrolysis is being performed by using first electrode comprising titanium and the second electrode made of graphite, titanium, or any combination thereof thereby yielding gaseous products including carbon monoxide (CO) and oxygen; and separating the gaseous products formed during the electrolysis by using a separating membrane located between said first and second electrodes, said membrane comprising a metal plate attached to two spaced-apart metal grids, the metal grids having pores configured for allowing passage through the membrane of ions involved in the electrolysis and preventing passage of bubbles of oxygen and CO gases, such that border zones are formed between the metal grids of the membrane and the first and second electrodes respectively, preventing mixture of gases originating outside the metal grids; said membrane being made of titanium or titanium alloy.