公开(公告)号：US20230136651A1

公开(公告)日：2023-05-04

申请号：US17840633

申请日：2022-06-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dong Ki LEE ,  Jai Hyun KOH ,  Dahye WON ,  Ung LEE ,  Hyung-Suk OH ,  Byoung Koun MIN ,  JongIn WOO ,  Byeong Cheul MOON

IPC: B01J27/185 ,  C07D307/68 ,  B01J37/02 ,  B01J37/04

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

公开(公告)号：US20210254225A1

公开(公告)日：2021-08-19

申请号：US16804001

申请日：2020-02-28

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dong Ki LEE ,  Byoung Koun MIN ,  Byungwoo KIM ,  Yun Jeong HWANG ,  Hyung-Suk OH ,  Ung LEE ,  Jai Hyun KOH

IPC: C25B1/00 ,  C25B9/04 ,  C25B11/04 ,  H01M14/00

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.

公开(公告)号：US20240417252A1

公开(公告)日：2024-12-19

申请号：US18236489

申请日：2023-08-22

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jee Hye BYUN ,  Dong Ki LEE

IPC: C01B15/026

Abstract: The present invention relates to an organic working solution for photochemical hydrogen peroxide production, and a method for producing hydrogen peroxide by photo-autoxidation utilizing the organic working solution.
Specifically, the present invention relates to a method for producing hydrogen peroxide from an organic working solution in which oxidation of an aromatic alcohol and reduction of oxygen occur through photo-autoxidation of an aromatic carbonyl compound contained in the organic working solution, and the reduced oxygen.

公开(公告)号：US20240093388A1

公开(公告)日：2024-03-21

申请号：US18161991

申请日：2023-01-31

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyung-Suk OH ,  Woong Hee LEE ,  Ung LEE ,  Jai Hyun KOH ,  Dong Ki LEE ,  Dahye WON ,  Byoung Koun MIN

IPC: C25B9/23 ,  C25B1/23 ,  C25B11/032 ,  C25B11/052 ,  C25B11/081

CPC classification number: C25B9/23 ,  C25B1/23 ,  C25B11/032 ,  C25B11/052 ,  C25B11/081 ,  C25B3/26

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.

公开(公告)号：US20230321599A1

公开(公告)日：2023-10-12

申请号：US17956206

申请日：2022-09-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dong Ki LEE ,  Hyun Joo LEE ,  Seojung HAN ,  Heesung EUM ,  Seokhyeon CHEONG

IPC: B01D53/32 ,  B01D53/56 ,  B01D53/75 ,  B01D53/78

CPC classification number: B01D53/56 ,  B01D53/326 ,  B01D53/75 ,  B01D53/78 ,  B01D2257/404

Abstract: Provided is a device for removing nitrogen oxide, the device including an inflow path for gas containing nitrogen oxide; and a reversible metal complex compound coming into contact with the gas containing nitrogen oxide which is introduced through the inflow path, wherein the reversible metal complex compound includes a central metal ion reacting and binding with nitrogen oxide; and a ligand coordinating with the central metal ion, wherein when the central metal ion is oxidized, the bound nitrogen oxide is separated, and the oxidized central metal ion is reduced to recombine with nitrogen oxide.

公开(公告)号：US20230057916A1

公开(公告)日：2023-02-23

申请号：US17724609

申请日：2022-04-20

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ung LEE ,  Da Hye WON ,  Jai Hyun KOH ,  Dong Ki LEE ,  Hyung Suk OH ,  Byoung Koun MIN

IPC: C25B15/08 ,  B01D53/62 ,  B01D53/78 ,  B01D53/96 ,  C25B1/23 ,  C25B9/19 ,  C25B9/70 ,  C25B11/052 ,  C25B11/065 ,  C25B11/081 ,  H01M8/0656 ,  H01M8/0612 ,  B01J19/24 ,  C07C29/151

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.

公开(公告)号：US20210328229A1

公开(公告)日：2021-10-21

申请号：US17197893

申请日：2021-03-10

Applicant: Korea Institute of Science and Technology

Inventor： Hyung Suk OH ,  Woong Hee LEE ,  Byoung Koun MIN ,  Yun Jeong HWANG ,  Ung LEE ,  Dong Ki LEE ,  Da Hye WON ,  Jai Hyun KOH

IPC: H01M4/90 ,  C25B11/089 ,  B22F1/00

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.

公开(公告)号：US20250092540A1

公开(公告)日：2025-03-20

申请号：US18413987

申请日：2024-01-16

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dong Ki LEE ,  Ung LEE ,  Hyung-Suk OH ,  Byoung Koun MIN ,  Dahye WON ,  Jai Hyun KOH ,  Woong Hee LEE ,  Jongin WOO ,  Byeong Cheul MOON

IPC: C25B11/061 ,  C25B3/05 ,  C25B3/07 ,  C25B11/037 ,  C25B11/091

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.

公开(公告)号：US20240375955A1

公开(公告)日：2024-11-14

申请号：US18236475

申请日：2023-08-22

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jee Hye BYUN ,  Dong Ki LEE ,  Byeong Cheul MOON ,  Bayarkhuu BOLORMAA

IPC: C01B15/026 ,  B01J31/06 ,  B01J35/00

Abstract: The present invention relates to a method and process for preparing hydrogen peroxide, and more particularly, to a photochemical hydrogen peroxide preparation process performed by combining photoautoxidation and photocatalytic reactions in an organic reaction solution to which a catalytic amount of water is added using solar light as a main energy source.

公开(公告)号：US20240368101A1

公开(公告)日：2024-11-07

申请号：US18379709

申请日：2023-10-13

Applicant: Korea Institute of Science and Technology

Inventor： Dong Ki LEE ,  Byeong Cheul Moon ,  Jai Hyun Koh ,  Woong Hee Lee ,  Dahye Won ,  Ung Lee ,  Hyung-Suk Oh ,  Byoung Koun Min

IPC: C07D307/68

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.