Patent ID: 11878279
Assignee: JAPAN SCIENCE AND TECHNOLOGY AGENCY
Field: Measurement (Instruments)
Classification: CPC B  C  G | IPC B  C  G

Claim 0:
1. A method for producing formic acid by electrochemically reducing carbon dioxide, the method comprising: (a) reacting carbon dioxide with a metal complex represented by formula (2a) to obtain a reaction product:, wherein M1 represents, ruthenium or iron,
X represents O(CH2)nNR5R6, NR5R6, or PX1X2X3,
Y represents CO, O(CH2)nNR5R6, NR5R6, or PX1X2X3,
ring A and ring B form a nitrogen-containing heterocycle having a 2,2′-bipyridine structure optionally having one to four substituents, each independently selected from the group consisting of an alkyl group, an alkoxy group, an aryloxy group and a halogen atom,
R5 and R6 are identical or different and represent an alkyl group, a hydroxyalkyl group or a hydrogen atom,
n represents a number of 2 to 8, and
one, two or three of X1, X2 and X3 are identical or different and represent a hydrocarbon group optionally having a substituent or a hydrocarbon oxy group optionally having a substituent, the rest representing a hydrogen atom or a hydroxy group; and
(b) applying a voltage to the reaction product.