Electrochemical cell, method for producing carbonyl compound, and synthesis system

Patent metadata

Field	Value
Publication number	US-12215435-B2
Application number	US-202217940542-A
Country	US
Kind code	B2
Filing date	Sep 8, 2022
Priority date	Sep 9, 2021
Publication date	Feb 4, 2025
Grant date	Feb 4, 2025

Abstract

The electrochemical cell is an electrochemical cell which electrochemically synthesizes at least one carbonyl compound selected from the group consisting of organic carbonates and organic oxalates from carbon monoxide, and has an electrolyte solution containing a redox species and a catalyst, and an electrode.

First claim

The invention claimed is:

1. An electrochemical cell which electrochemically synthesizes at least one carbonyl compound selected from the group consisting of organic carbonates and organic oxalates from carbon monoxide,
the electrochemical cell comprising: an electrolyte solution comprising a redox species and a catalyst; and an electrode,
wherein the catalyst comprises an active particle having a metal element and a support which supports the active particle thereon.

2. The electrochemical cell according to claim 1 , wherein the metal element of the catalyst comprises at least one metal element selected from the group consisting of group 8 to group 11 elements.

3. The electrochemical cell according to claim 1 , wherein the metal element of the catalyst comprises at least two metal elements selected from the group consisting of group 8 to group 11 elements.

4. The electrochemical cell according to claim 1 , wherein the redox species is at least one selected from the group consisting of halogenated metal salts, organic redoxes and complex redoxes.

5. The electrochemical cell according to claim 1 , wherein the electrode comprises no catalyst.

6. The electrochemical cell according to claim 1 , wherein the electrolyte solution comprises an alcohol-based compound.

7. The electrochemical cell according to claim 1 , further comprising: an anode compartment comprising the electrode disposed therein and containing the electrolyte solution therein; and an inlet port through which carbon monoxide is supplied to the anode compartment.

8. The electrochemical cell according to claim 1 , comprising a dispersing member bubbling, fluidizing or stirring the electrolyte solution to disperse at least either one of the catalyst and the redox species in the electrolyte solution.

9. A synthesis system comprising an electrochemical cell according to claim 1 ,
wherein the synthesis system comprises a conversion portion which converts carbon dioxide to carbon monoxide and a supply path which supplies the carbon monoxide obtained by the conversion portion to the anode compartment.

10. The synthesis system according to claim 9 , wherein the carbon dioxide is obtained from any one of exhaust gases of electric power plants, ironworks, cement factories and waste incineration plants.

11. The electrochemical cell according to claim 1 , wherein the catalyst contained in the electrolyte solution catalyzes an electrochemical reaction for synthesizing the at least one carbonyl compound from the carbon monoxide.

12. The electrochemical cell according to claim 1 , wherein the support is porous carbon which is a powdery or particulate carbon.

13. A method of producing a carbonyl compound, comprising electrochemically synthesizing at least one carbonyl compound selected from the group consisting of organic carbonates and organic oxalates from carbon monoxide in an electrochemical cell according to claim 1 .

14. The method of producing a carbonyl compound according to claim 13 , comprising converting carbon dioxide into carbon monoxide, the carbonyl compound being electrochemically synthesized from the carbon monoxide.

15. The method of producing a carbonyl compound according to claim 14 , wherein the carbon dioxide is obtained from any one of exhaust gases of electric power plants, ironworks, cement factories and waste incineration plants.

Assignees

• Sekisui Chemical Co Ltd

Inventors

• Fujinuma Naohiro

Classifications

• C25B3/29

  Coupling reactions · CPC title

• B01J2219/0892

  involving catalytically active material · CPC title

• B01J2219/0884

  Gas-liquid · CPC title

• B01J2219/0803

  employing electric or magnetic energy · CPC title

• B01J19/087

  employing electric or magnetic energy · CPC title