Method for electrochemically reducing carbon dioxide
AssigneeNederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
InventorsEarl Lawrence Vincent Goetheer, Roman Latsuzbaia, Anca Anastasopol, Cornelis Petrus Marcus Roelands, Roel Johannes Martinus Bisselink
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Abstract
The disclosure is directed to a method for in-situ extracting a reduced carbon dioxide product or product mixture in an electrochemical cell, and the use of a three-compartment electrochemical cell for in-situ extraction of organic carboxylic acids such as formic acid, acetic acid, oxalic acid, glycolic acid, tartaric acid, malonic acid, propionic acid, glyoxylic acid, and/or salts thereof.
Claims21
A method for electrochemically reducing carbon dioxide into a reduced carbon dioxide product or product mixture and in-situ extracting the reduced carbon dioxide product or product mixture in a three-compartment electrochemical cell which comprises
- a cathode compartment;
- an anode compartment;
- a first separator which is a cation exchange membrane;
- a second separator which is an anion exchange membrane, and
- a product compartment,
- wherein each of the anode compartment, the cathode compartment and the product compartment are individual separate compartments,
- the method comprising:
- a) introducing a carbon dioxide-rich absorbent into the cathode compartment;
- b) applying an electrical potential between an anode and a cathode in the electrochemical cell sufficient for the cathode to reduce carbon dioxide into a reduced carbon dioxide product or product mixture in the carbon dioxide-rich absorbent, thereby providing a carbon dioxide-poor absorbent, and
- c) collecting the reduced carbon dioxide product or product mixture via in-situ extraction, wherein the anode is separated from the cathode by more than one separator;
- wherein the product compartment of the three-compartment electrochemical cell is the compartment into which the reduced carbon dioxide product or product mixture is in-situ extracted.
Dependencies are inferred from the claim text.