公开(公告)号：US20200155997A1

公开(公告)日：2020-05-21

申请号：US16454566

申请日：2019-06-27

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyun Joo LEE ,  Ung LEE ,  Hong Gon KIM ,  Shinhye CHO ,  He Won LEE

IPC: B01D53/14 ,  B01D53/50 ,  B01D53/78 ,  C07D487/08 ,  C07D241/04 ,  C07C215/40

Abstract: The present disclosure relates to a hydroxyl group-containing amine-based sulfur dioxide and sulfurous absorbent, and a method for preparing the same. The absorbent uses an ionic liquid in the form of a salt including a diamine compound substituted with a hydroxyl group, and can be used as an absorbent capable of removing not only sulfur dioxide (SO2) but also sulfurous acid (H2SO3) formed by combination of sulfur dioxide with water.

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：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：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：US20230174443A1

公开(公告)日：2023-06-08

申请号：US17945796

申请日：2022-09-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ung LEE ,  Hyun Joo LEE ,  Hong Gon KIM ,  Kyeong Su KIM ,  Jae Hyung IM ,  He Won LEE

IPC: C07C29/48 ,  C01B17/90

CPC classification number: C07C29/48 ,  C01B17/90 ,  C07C2523/42

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.

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.