US 12,325,923 B2
Electrochemical cell and method of producing carbonyl compound
Naohiro Fujinuma, Tsukuba (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Filed on Feb. 9, 2023, as Appl. No. 18/107,622.
Claims priority of provisional application 63/308,595, filed on Feb. 10, 2022.
Prior Publication US 2023/0279561 A1, Sep. 7, 2023
Int. Cl. C25B 3/07 (2021.01); C25B 1/23 (2021.01); C25B 3/23 (2021.01); C25B 9/17 (2021.01); C25B 11/052 (2021.01); C25B 11/081 (2021.01); C25B 11/095 (2021.01)
CPC C25B 3/07 (2021.01) [C25B 1/23 (2021.01); C25B 3/23 (2021.01); C25B 9/17 (2021.01); C25B 11/052 (2021.01); C25B 11/081 (2021.01); C25B 11/095 (2021.01)] 18 Claims
OG exemplary drawing
 
1. An electrochemical cell comprising:
a cathode having a first catalyst that reduces carbon dioxide to carbon monoxide;
an anode;
an electrolyte solution containing a reactant and an electrolyte; and
a second catalyst that synthesizes a carbonyl compound from the carbon monoxide and the reactant,
wherein
the electrolyte comprises a redox ion;
the anode converts the redox ion into an oxidizing species;
the second catalyst synthesizes the carbonyl compound from the carbon monoxide and the reactant in the presence of the oxidizing species;
the electrochemical cell is a single-compartment type, and the electrolyte solution filled in the electrolytic compartment of the electrochemical cell comes in contact with the cathode, the anode and the second catalyst at least;
the second catalyst is an active particle-containing catalyst that is powdery or particulate;
the active particle-containing catalyst is dispersed in the electrolyte solution and contains a support and active particles having a metal element that are supported on the support; and
the support is porous carbon.