Abstract: The present disclosure discloses a carbon dioxide capture agent and a carbon dioxide capture and reduction system using the same. The system includes an electrochemical reaction unit including a reduction electrode, an oxidation electrode, and a separation membrane separating the reduction electrode and the oxidation electrode; a carbon dioxide capture unit capturing carbon dioxide and supplying a carbon dioxide capture solution to the reduction electrode of the electrochemical reaction unit; and an oxidation reaction electrolyte unit supplying an aqueous solution to the oxidation electrode of the electrochemical reaction unit, and the carbon dioxide capture unit includes the carbon dioxide capture agent. The carbon dioxide capture agent can be regenerated through a subsequent electrochemical reaction after capturing carbon dioxide.

Abstract: A system of utilizing carbon dioxide comprises a carbon dioxide capturing device for capturing carbon dioxide, an electrochemical reaction device for producing synthetic gas by reducing the carbon dioxide captured by the carbon dioxide capturing device, a hydrogen carrier manufacturing device for manufacturing a hydrogen carrier material by using the synthetic gas produced by the electrochemical reaction device, a dehydrogenation device for producing hydrogen from the hydrogen carrier material manufactured by the hydrogen carrier manufacturing device, and a hydrogen utilization device for utilizing hydrogen produced by the dehydrogenation device, wherein the dehydrogenation device further produces carbon dioxide from the hydrogen carrier material and supplies the carbon dioxide to the carbon dioxide capturing device.

Abstract: A method for preparing and separating alkylene carbonate using carbon dioxide in air is disclosed herein. The method comprises the steps of: injecting air containing carbon dioxide into an amine solution containing a diamine compound to obtain a solution in which carbon dioxide is captured; adding alkylene oxide, a catalyst, and a solvent to the solution in which carbon dioxide is captured, and reacting to obtain a solution in which alkylene carbonate is produced; and separating alkylene carbonate from the solution in which alkylene carbonate is produced.

Abstract: Disclosed is a methanol and sulfuric acid co-production system capable of producing methanol and sulfuric acid in equal equivalents. Specifically, the system includes an oxidation reaction unit configured to produce methyl bisulfate (CH3OSO3H) by reacting methane gas with an acid solution in the presence of a catalyst, a reactive distillation unit disposed downstream of the oxidation reaction unit and configured to esterify methyl bisulfate (CH3OSO3H) supplied from the oxidation reaction unit with trifluoroacetic acid (CF3COOH) to obtain a product and to separate the product into methyl trifluoroacetate (CF3COOCH3) and sulfuric acid (H2SO4) through thermal distillation, and a hydrolysis reaction unit disposed downstream of the reactive distillation unit and configured to produce methanol by hydrolyzing methyl trifluoroacetate (CF3COOCH3) supplied from the reactive distillation unit, in which the reactive distillation unit recirculates the sulfuric acid resulting from separation to the oxidation reaction unit.

Abstract: Provided are a basic electrocatalyst applied to a carbon dioxide reduction and ethylene production system, a basic electrocatalyst electrode and an apparatus each including the same, and a method of manufacturing the basic electrocatalyst electrode. The basic electrocatalyst electrode for for carbon dioxide reduction and ethylene production includes: catalyst particles each including copper hydroxide (Cu(OH)2); and a basic compound. Since the basic electrocatalyst electrode has high carbon dioxide reduction performance and high ethylene selectivity, the basic electrocatalyst electrode may be applied to a reduction electrode of a carbon dioxide reduction and ethylene production apparatus and may exhibit high current density and high ethylene selectivity. The basic electrocatalyst electrode may be manufactured by a simple method, and may be applied to a large-area electrode.

Abstract: Embodiments relate to a technology for a membrane electrode assembly (MEA) for carbon dioxide reduction. In particular, the embodiments relate to a technology capable of changing an acidic environment, which is unfavorable to a reaction on the cathode side during a catalytic reaction, into an alkaline environment, which is a problem when a cation exchange membrane is used as a separation membrane, as well as reducing the hydrogen evolution reaction (HER), which is a side reaction.

Abstract: Proposed are a flow-through reactor for conversion of carbon dioxide and a method for conversion of carbon dioxide using the flow-through reactor. Carbon dioxide and a catholyte are separately supplied, and a reference electrode having a large volume is capable of being mounted on an electrolyte pocket without increasing resistance since a structure of the electrolyte pocket is improved.

Abstract: A catalyst electrode for production of 2,5-furandicarboxylic acid according to an embodiment of the present invention includes: a first metal substrate; and a second metal hydroxide coating layer located on a surface of the first metal substrate, wherein the first metal substrate includes one or more micro-sized first metal particles on the surface thereof, and the second metal hydroxide coating layer may be located on a surface of the first metal particles.

Abstract: Exemplary embodiments of the present invention may provide a continuous production system for 2,5-furandicarboxylic acid (FDCA), the continuous production system including: raw material supply units supplying an aqueous 5-hydroxymethylfurfural (HMF) solution and a basic aqueous solution, respectively; a micro-mixing unit mixing the aqueous HMF solution and the basic aqueous solution supplied from the raw material supply units, respectively, to form a raw material mixture; an electrochemical reaction unit synthesizing FDCA while passing the raw material mixture introduced from the micro-mixing unit in a single pass; and a product storage unit storing a product discharged from the electrochemical reaction unit.

Abstract: Proposed is a CO2-reduction membrane electrode assembly (MEA), which is a novel MEA capable of changing a reaction condition to an alkaline condition from a problematic acidic condition unfavorable to reactions on a cathode side during catalytic reactions using a cation exchange membrane (CEM) as a separator. In addition, the MEA can reduce a hydrogen evolution reaction (HER), which is a side reaction. In addition, a method of manufacturing the MEA, and a CO2-reduction assembly including the MEA are also proposed.

Abstract: Disclosed is a methanol and sulfuric acid co-production system capable of producing methanol and sulfuric acid in equal equivalents. Specifically, the system includes an oxidation reaction unit configured to produce methyl bisulfate (CH3OSO3H) by reacting methane gas with an acid solution in the presence of a catalyst, a reactive distillation unit disposed downstream of the oxidation reaction unit and configured to esterify methyl bisulfate (CH3OSO3H) supplied from the oxidation reaction unit with trifluoroacetic acid (CF3COOH) to obtain a product and to separate the product into methyl trifluoroacetate (CF3COOCH3) and sulfuric acid (H2SO4) through thermal distillation, and a hydrolysis reaction unit disposed downstream of the reactive distillation unit and configured to produce methanol by hydrolyzing methyl trifluoroacetate (CF3COOCH3) supplied from the reactive distillation unit, in which the reactive distillation unit recirculates the sulfuric acid resulting from separation to the oxidation reaction unit.

Abstract: According to one embodiment of the present invention, there is provided a catalyst compound, which comprises a compound of Chemical Formula 1 below and catalyzes the process of oxidizing 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA): NiCoxPy??[Chemical Formula 1] (wherein x and y are the molar ratio for Ni contained in the catalyst compound, 0<x<1, 0<y<1).

Abstract: A system of utilizing carbon dioxide comprises a carbon dioxide capturing device for capturing carbon dioxide, an electrochemical reaction device for producing synthetic gas by reducing the carbon dioxide captured by the carbon dioxide capturing device, a hydrogen carrier manufacturing device for manufacturing a hydrogen carrier material by using the synthetic gas produced by the electrochemical reaction device, a dehydrogenation device for producing hydrogen from the hydrogen carrier material manufactured by the hydrogen carrier manufacturing device, and a hydrogen utilization device for utilizing hydrogen produced by the dehydrogenation device, wherein the dehydrogenation device further produces carbon dioxide from the hydrogen carrier material and supplies the carbon dioxide to the carbon dioxide capturing device.

Abstract: Proposed is an iridium alloy catalyst having reversible catalytic activity for an oxygen evolution reaction (OER), a hydrogen evolution reaction (HER), and a hydrogen oxidation reaction (HOR) by including an iridium alloy including iridium (Ir) and nickel (Ni). The iridium alloy catalyst according to the present disclosure is rapidly converted to an iridium alloy catalyst in an oxide form and an iridium alloy catalyst in a metallic form according to applied voltage by controlling its crystallinity. Thus, even in case an oxide layer is formed after the OER, the oxidation layer disappears during the HER and HOR and the properties of an iridium metal catalyst remain, thereby maintaining HER/HOR performance.

Abstract: Proposed is an iridium alloy catalyst having reversible catalytic activity for an oxygen evolution reaction (OER), a hydrogen evolution reaction (HER), and a hydrogen oxidation reaction (HOR) by including an iridium alloy including iridium (Ir) and nickel (Ni). The iridium alloy catalyst according to the present disclosure is rapidly converted to an iridium alloy catalyst in an oxide form and an iridium alloy catalyst in a metallic form according to applied voltage by controlling its crystallinity. Thus, even in case an oxide layer is formed after the OER, the oxidation layer disappears during the HER and HOR and the properties of an iridium metal catalyst remain, thereby maintaining HER/HOR performance.

Abstract: Disclosed is a hydrogen production and storage system using solar energy which converts solar energy into electric energy through a solar panel, operates a water electrolysis reactor using the electric energy to produce hydrogen, and stores the hydrogen at a high pressure in a hydrogen storage tank through a water tank, a pressure control valve, etc.

Abstract: Provided are a photoelectrode for hydrogen generation in solar water splitting and a manufacturing method thereof. The photoelectrode for hydrogen generation in solar water splitting, includes a light absorbing layer including a chalcopyrite compound; and a hydrogen generation catalyst including CuxS (where 0?x?2) which is present on the light absorbing layer, and may be manufactured by using a solution process which enables mass production and produce hydrogen from water using sunlight with high efficiency without using a noble metal element.

Abstract: A method for producing a methanol precursor, methyl trifluoroacetate, having high-purity includes the steps of (a) preparing methyl bisulfate by mixing a catalyst with an acid solution comprising a sulfur-containing acid to provide a first mixture and supplying methane gas to the first mixture to prepare the methyl bisulfate; and (b) preparing methyl trifluoroacetate (CF3CO2CH3) by adding trifluoroacetic acid (CF3CO2H) to the first mixture including the methyl bisulfate to provide a second mixture and distilling the second mixture under heating to prepare, separate and purify the methyl trifluoroacetate (CF3CO2CH3). Methanol may be produced by adding water to the methyl trifluoroacetate (CF3CO2CH3). A methyl ester represented by Formula 2 below may be produced by adding a carboxylic acid represented by Formula 1 below to the methyl trifluoroacetate (CF3CO2CH3): R1CO2H??(1), where R1 is selected from C1-C10 alkyl groups, R1CO2CH3??(2), where R1 is as defined in Formula 1.

Abstract: A sulfur dioxide absorbent that is an ionic liquid including a solvent; and a salt of a diamine compound that is substituted with a hydroxyl group and has a chemical formula 1 to 3 below dissolved in the solvent: where, in Chemical Formula 1 and 2, R1-R4 are the same or different and each is independently selected from the group consisting of H, a C1-C6 alkyl, and a C1-C6 alkoxy; and where, in Chemical Formula 1 to 3, X is selected from the group consisting of Cl, Br, I, MeSO3, CF3SO3, HCO2, CF3CO2 and CH3CO2; and n is an integer of 1-10. The sulfur dioxide absorbent is constituted to selectively absorb sulfur dioxide and sulfurous acid (H2SO3) formed by combination of sulfur dioxide with water, not CO2.

Abstract: Provided are a basic electrocatalyst applied to a carbon dioxide reduction and ethylene production system, a basic electrocatalyst electrode and an apparatus each including the same, and a method of manufacturing the basic electrocatalyst electrode. The basic electrocatalyst electrode for for carbon dioxide reduction and ethylene production includes: catalyst particles each including copper hydroxide (Cu(OH)2); and a basic compound. Since the basic electrocatalyst electrode has high carbon dioxide reduction performance and high ethylene selectivity, the basic electrocatalyst electrode may be applied to a reduction electrode of a carbon dioxide reduction and ethylene production apparatus and may exhibit high current density and high ethylene selectivity. The basic electrocatalyst electrode may be manufactured by a simple method, and may be applied to a large-area electrode.