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：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.

公开(公告)号：US20210292917A1

公开(公告)日：2021-09-23

申请号：US17017845

申请日：2020-09-11

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

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

IPC: C25B1/00 ,  C25B1/10 ,  C25B9/08 ,  C25B9/18 ,  C25B15/08 ,  B01D53/26 ,  H02S10/40 ,  H02S30/10 ,  H02S40/30

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.

公开(公告)号：US20200343393A1

公开(公告)日：2020-10-29

申请号：US16397334

申请日：2019-04-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Byoung Koun MIN ,  Yun Jeong HWANG ,  Hyung-Suk OH ,  Ung LEE ,  Dahye WON ,  Dong Ki LEE ,  Joo-Hyun KIM ,  Min Kyu KIM

IPC: H01L31/0392 ,  H01L31/046

Abstract: A chalcopyrite compound-based thin film in which an alkali metal is incorporated, and a method of fabricating the same are provided. The chalcopyrite compound-based thin film in which an alkali metal is incorporated may have improved film characteristics such as excellent chalcopyrite crystal characteristics and improved surface characteristics, and may exhibit improved optical characteristics by control of the distribution of constituent elements in the chalcopyrite compound layer. Accordingly, performance of a solar cell including the chalcopyrite compound-based thin film may be improved. The chalcopyrite compound-based thin film may be easily fabricated through a solution process.

公开(公告)号：US20250136445A1

公开(公告)日：2025-05-01

申请号：US18427570

申请日：2024-01-30

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jee Hye BYUN ,  Dong Ki LEE ,  Chanhee BOO

IPC: C01B15/026 ,  B01J31/06 ,  B01J31/40 ,  B01J35/39 ,  C01B15/013

Abstract: The present invention relates to hydrogen peroxide manufacturing process and manufacturing system based on a photochemical reaction. Specifically, the present invention relates to a series of hydrogen peroxide manufacturing processes of generating, extracting, and purifying hydrogen peroxide through a photochemical reaction, and a hydrogen peroxide manufacturing system which is applied with the manufacturing processes and consists of a photoreactor-extractor-purifier.

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.