Abstract: The present invention decreases the resistance of an electrolysis cell that is used for the reduction of carbon dioxide even under a strong alkaline condition and increases the electrolysis efficiency. The present invention provides a carbon dioxide treatment device including a collection device that collects carbon dioxide, a first electrochemical reaction part having a first electrolysis cell that electrochemically reduces the carbon dioxide collected with the collection device to carbon monoxide, a second electrochemical reaction part having a second electrolysis cell that electrochemically reduces the carbon monoxide generated in the first electrochemical reaction part to ethylene, and a microbubble generation part that supplies the carbon monoxide generated in the first electrochemical reaction part to the second electrochemical reaction part as microbubbles.

Abstract: A carbon dioxide electrolysis cell of the present invention is a raw material solution supply type carbon dioxide electrolysis cell, including a cathode section, an anode section and a diaphragm, wherein, at one end, which is a short side of a cathode-side solution flow path forming member, a plurality of cathode-side solution supply holes and a plurality of anode-side solution supply holes are provided alternately, and at the other end, a plurality of cathode-side solution discharge holes and a plurality of anode-side solution discharge holes are provided alternately, wherein, at one end of an anode-side solution flow path forming member, a plurality of anode-side solution supply holes are provided, and at the other end, a plurality of anode-side solution discharge holes are provided, and wherein the plurality of cathode-side solution supply holes and the plurality of anode-side solution supply holes are arranged alternately, and the plurality of cathode-side solution discharge holes and the plurality of ano

Abstract: The present application aims to reduce energy consumption when collecting carbon dioxide and improve reaction efficiency when electrochemically reducing carbon dioxide. The present invention provides a carbon dioxide treatment device, including an absorption device that absorbs carbon dioxide, a removal device that removes air components from an electrolytic solution containing the carbon dioxide absorbed by the absorption device, an electrochemical reaction part having an electrolysis cell that electrochemically reduces the carbon dioxide absorbed by the absorption device to carbon monoxide, and a solar power generation device that supplies electric power to the electrochemical reaction part.

Abstract: A method for generating isobutene, for isomerizing normal butene to isobutene, in which generation of by-products can be infinitely suppressed, and a high yield of isobutene can be achieved. The method for generating isobutene includes isomerizing normal butene to isobutene, wherein the normal butene is brought into contact with a basic catalyst in isomerizing. A reaction temperature in isomerizing is preferably in a range from 25° C. to 249° C.

Abstract: Provided is a carbon dioxide treatment device with improved energy efficiency in electrochemical reduction of carbon dioxide, a carbon dioxide treatment method, and a method for producing a carbon compound.

Abstract: A method for generating isobutene, for isomerizing normal butene to isobutene, in which generation of by-products can be infinitely suppressed, and a high yield of isobutene can be achieved. The method for generating isobutene includes isomerizing normal butene to isobutene. In isomerizing, the normal butene is brought into contact with zeolite, and a reaction temperature in isomerizing is in a range from 25° C. to 249° C.

Abstract: An object of the present invention is to provide a carbon dioxide treatment apparatus, a carbon dioxide treatment method, and a method of producing carbon compounds, which have high energy efficiency from carbon dioxide capture to reduction and a high carbon dioxide loss reduction effect. In a carbon dioxide treatment apparatus 100 including: a capturing device 1 that captures carbon dioxide; and an electrochemical reaction device 2 that electrochemically reduces carbon dioxide, an absorption unit 12 of the capturing device 1 brings an electrolytic solution A composed of a strong alkaline aqueous solution and carbon dioxide gas into contact with each other to dissolve carbon dioxide in the electrolytic solution A and absorb the carbon dioxide, supplies an electrolytic solution B that has absorbed carbon dioxide between the cathode and the anode of the electrochemical reaction device 2, and electrochemically reduces the dissolved carbon dioxide in the electrolytic solution at the cathode.

Abstract: What is provided is a carbon dioxide treatment device having high energy efficiency for recovering and reducing carbon dioxide, and a method of producing a carbon compound using the carbon dioxide treatment device.

Abstract: A fluid flow path has an introduction unit, an outflow unit, and contact units. The introduction unit is formed on a surface of a cathode-side primary flow path structure opposite to a cathode as an elongated recess with a width smaller than that of a tube. The tube abuts against the introduction unit so as to straddle the introduction unit. The outflow unit is formed on a surface of the cathode-side primary flow path structure opposite to the cathode as an elongated recess with a width smaller than that of the tube. The tube abuts against the outflow unit so as to straddle the outflow unit. The contact unit is formed in the groove shape on a surface of the cathode-side primary flow path structure on the cathode side. The contact unit has its upstream end connected to the introduction unit and its downstream end connected to the outflow unit.

Abstract: A carbon dioxide treatment apparatus includes: a capturing device that captures carbon dioxide; and an electrochemical reaction unit that electrochemically reduces the carbon dioxide captured by the capturing device, and the electrochemical reaction unit includes a cathode, an anode, an anion exchange membrane provided between the cathode and the anode, a cathode-side liquid flow path which is provided adjacent to the cathode and through which an electrolytic solution flows, an anode-side liquid flow path which is provided adjacent to the anode and through which the electrolytic solution flows and a first liquid supply path which supplies, to the anode-side liquid flow path, the electrolytic solution A which has flowed through the cathode-side liquid flow path.

Abstract: An electrochemical reaction device includes: an electrode layer including a cathode, an ion exchange membrane, and an anode that are stacked in this order; a first flow path structure including an anode-specific flow path as a passage for an electrolytic solution defined by a surface on one side and a cathode-specific flow path as a passage for an electrolytic solution containing dissolved carbon dioxide defined by a surface on the other side; and a second flow path structure including an anode-specific flow path as a passage for an electrolytic solution defined by a surface on one side and a cathode-specific flow path as a passage for an electrolytic solution containing dissolved carbon dioxide defined by a surface on the other side. The first flow path structure, the electrode layer, the second flow path structure, and the electrode layer are stacked in this order repeatedly to form an electrolytic cell stacking structure.

Abstract: A carbon dioxide treatment apparatus includes: a capturing device that captures carbon dioxide; and an electrochemical reaction device that electrochemically reduces the carbon dioxide captured by the capturing device, and the electrochemical reaction device includes a first electrolytic cell that electrochemically reduces the carbon dioxide to carbon monoxide, and a second electrolytic cell that electrochemically reduces the carbon monoxide produced by the first electrolytic cell to ethylene.

Abstract: A carbon dioxide treatment apparatus, a carbon dioxide treatment method, and a method for producing a carbon compound that have high energy efficiency in recovery and reduction of carbon dioxide and are highly effective in reducing loss of carbon dioxide. The carbon dioxide treatment apparatus (100) includes a recovery device (1) configured to recover carbon dioxide, an electrochemical reaction device (2) configured to electrochemically reduce carbon dioxide, and a pH adjuster (52), wherein pH of a cathode side electrolytic solution is higher than that of an anode side electrolytic solution, carbon dioxide gas is supplied from a concentration part 11 to a gas flow path on a side of a cathode (21) opposite to an anode (22), and the carbon dioxide gas is reduced at the cathode (21).

Abstract: Provided is a carbon dioxide treatment device with improved energy efficiency in electrochemical reduction of carbon dioxide, a carbon dioxide treatment method, and a method for producing a carbon compound.

Abstract: A carbon dioxide treatment apparatus, a carbon dioxide treatment method, and a method for producing a carbon compound that have high energy efficiency in recovery and reduction of carbon dioxide and are highly effective in reducing loss of carbon dioxide. The carbon dioxide treatment apparatus (100) includes a recovery device (1) configured to recover carbon dioxide, an electrochemical reaction device (2) configured to electrochemically reduce carbon dioxide, and a pH adjuster (52), wherein pH of a cathode side electrolytic solution is higher than that of an anode side electrolytic solution, carbon dioxide gas is supplied from a concentration part 11 to a gas flow path on a side of a cathode (21) opposite to an anode (22), and the carbon dioxide gas is reduced at the cathode (21).

Abstract: What is provided is a carbon dioxide treatment device having high energy efficiency for recovering and reducing carbon dioxide, and a method of producing a carbon compound using the carbon dioxide treatment device.

Abstract: In an electrochemical reaction device 10 that electrochemically reduces carbon dioxide, a first power supplying body 27, a first gas flow path structure 24, a cathode 21, a liquid flow path structure 23, an ion exchange membrane 26, an anode 22, a second gas flow path structure 25, and a second power supplying body 28 are laminated in this order, an electrolyte flow path 31 is formed between the cathode 21 and the ion exchange membrane 26, a cathode-side gas flow path 32 for supplying carbon dioxide gas is formed on a side of the cathode 21 opposite to the anode 22, and an anode-side gas flow path 33 is formed on a side of the anode 22 opposite to the anode 21.

Abstract: An object is to provide an electrochemical reaction device in which unreacted carbon dioxide gas is less likely to be mixed in and the purity of carbon compounds generated by reduction can be improved, a method of reducing carbon dioxide using the same, and a method of producing carbon compounds.

Abstract: What is provided is an electrochemical reaction device into which unreacted carbon dioxide gas is less likely to be mixed in and which is capable of increasing purity of a carbon compound produced through reduction, a method for reducing carbon dioxide, and a method for producing a carbon compound. In an electrochemical reaction device electrochemically reducing carbon dioxide, an electrolyte flow path is formed which is provided between a cathode and an anode and through which an electrolyte containing a strong alkaline aqueous solution is supplied, a cathode-side gas flow path is formed which is provided on the cathode side opposite to the anode and through which carbon dioxide gas is supplied, liquid flow path closing means for openably closing an entrance of the electrolyte flow path is provided, and gas flow path closing means for openably closing an entrance of the cathode-side gas flow path is formed.

Abstract: An object of the present invention is to provide a carbon dioxide treatment apparatus, a carbon dioxide treatment method, and a method of producing carbon compounds, which have high energy efficiency from carbon dioxide capture to reduction and a high carbon dioxide loss reduction effect. In a carbon dioxide treatment apparatus 100 including: a capturing device 1 that captures carbon dioxide; and an electrochemical reaction device 2 that electrochemically reduces carbon dioxide, an absorption unit 12 of the capturing device 1 brings an electrolytic solution A composed of a strong alkaline aqueous solution and carbon dioxide gas into contact with each other to dissolve carbon dioxide in the electrolytic solution A and absorb the carbon dioxide, supplies an electrolytic solution B that has absorbed carbon dioxide between the cathode and the anode of the electrochemical reaction device 2, and electrochemically reduces the dissolved carbon dioxide in the electrolytic solution at the cathode.