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.