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公开(公告)号：US11666886B2
公开(公告)日：2023-06-06
申请号：US17533597
申请日：2021-11-23
Inventor： Jungkyu Choi , Kwan-Young Lee , Jinseong Kim , Eunhee Jang , Hwiyoon Noh
CPC classification number: B01J20/18 , B01J23/78 , F01N3/0835 , F01N3/101 , F01N3/0828 , F01N2240/18 , F01N2250/12 , F01N2370/04 , F01N2370/24 , F01N2510/063 , F01N2550/03 , F01N2570/12
Abstract: Disclosed are a hydrocarbon adsorption and desorption complex showing hydrocarbon adsorption and oxidation performance by controlling the cation ratio in zeolite, and a preparation method therefor. The hydrocarbon adsorption and desorption complex controls a cation ratio to exhibit the excellent hydrocarbon adsorption ability and oxidation performance even at a temperature lower than the catalyst activation temperature, and increases hydrothermal stability of the hydrocarbon adsorption and desorption complex through hydrothermal treatment to exhibit the excellent hydrocarbon adsorption and desorption performance even in a situation where water is present at a high temperature.
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公开(公告)号：US11198110B2
公开(公告)日：2021-12-14
申请号：US16050207
申请日：2018-07-31
Inventor： Jungkyu Choi , Kwan-Young Lee , Eunhee Jang
Abstract: The present invention relates to a method of fabricating an organic structure directing agent-free CHA type zeolite membrane and a membrane fabricated thereby, and more particularly to a method of fabricating a continuous CHA type zeolite membrane, which exhibits CO2/N2 and CO2/CH4 separation performances comparable with those of conventional membranes, in a cost-effective manner without a calcination process by hydrothermal synthesis using an alkali metal hydroxide without using an organic structure directing agent, and to a membrane fabricated thereby.
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公开(公告)号：US11433380B2
公开(公告)日：2022-09-06
申请号：US17356812
申请日：2021-06-24
Applicant: HYUNDAI MOTOR COMPANY , KIA CORPORATION , KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
Inventor： Kwan-Young Lee , Dalyoung Yoon , Jin Woo Choung , Jungkyu Choi , Eun Jun Lee , Yaeun Seo , Haney Park
IPC: B01J31/02 , B01J23/42 , B01J21/06 , B01J37/04 , B01J37/00 , B01J37/06 , B01J37/08 , B01J37/02 , B01J35/00 , B01J35/02 , B01D53/94
Abstract: The present disclosure provides a catalyst for reducing CO and HC which is a core-shell particle including a core and a shell surrounding the core, the core includes metal oxide nanoparticles and noble metal nanoparticles fixed to the metal oxide nanoparticles, and the shell includes zirconia (ZrO2), and a layer from which the metal oxide is removed between the core and the shell is included.
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公开(公告)号：US10376865B2
公开(公告)日：2019-08-13
申请号：US15795866
申请日：2017-10-27
Inventor： Kwan-Young Lee , Chan Hun Kim , Gwang-Sik Jeong , Young Gul Hur
IPC: B01J23/30 , B01J27/22 , B01J35/00 , B01J35/02 , B01J35/08 , B01J37/00 , B01J37/02 , B01J37/03 , B01J37/14 , B01J37/16 , B01J37/18 , C10G47/12
Abstract: Disclosed is a method of synthesizing nano-sized tungsten-silica core-shell particles by a silica-based sol-gel process. According to the method, tungsten-silica nanoparticles are very easy to synthesize by a simple process at ambient pressure and temperature. In addition, tungsten oxide-silica (WOx@SiO2) nanoparticles including tungsten in a stable oxidation state can be synthesized. In the tungsten oxide-silica nanoparticles, the size of the tungsten protected with the silica shell can be maintained in the nanometer range without further processing. Also disclosed is a method of synthesizing nano-sized tungsten oxide (WOx) and tungsten carbide (WC) particles by further processing of the tungsten-silica core-shell particles.
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公开(公告)号：US11919832B2
公开(公告)日：2024-03-05
申请号：US17194379
申请日：2021-03-08
Applicant: Korea University Research and Business Foundation , Seoul National University R&DB Foundation
Inventor： Kwan-Young Lee , Do Heui Kim , Jae Ik Sim , Byung Jin Lee
IPC: C07C2/76 , B01J23/89 , B01J27/22 , B01J29/068 , B01J29/072 , B01J29/44 , B01J29/46 , B01J29/72
CPC classification number: C07C2/76 , B01J23/8906 , B01J27/22 , B01J29/068 , B01J29/072 , B01J29/44 , B01J29/46 , B01J29/7276 , B01J2229/20 , C07C2523/89
Abstract: Disclosed is a dissimilar metal-supported catalyst for the production of aromatics by methane dehydroaromatization. In the dissimilar metal-supported catalyst, a noble metal such as gold (Au), silver (Ag), platinum (Pt), and/or rhodium (Rh) is introduced into a catalyst supported with iron (Fe) on a zeolite support to promote the dehydrogenation of methane and the formation of iron carbide (Fe3C) as an active species for dehydroaromatization, achieving a greatly improved yield of aromatics. Also disclosed is a method for producing aromatics using the dissimilar metal-supported catalyst.
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Patent Agency Ranking
公开(公告)号：US11485654B2
公开(公告)日：2022-11-01
申请号：US16368912
申请日：2019-03-29
Inventor： Kwan-Young Lee , Min June Kim , Min Woo Lee
IPC: C02F1/72 , B01J37/02 , B01J37/08 , B01J21/08 , B01J23/89 , B01J35/10 , C02F1/66 , C02F101/38 , C02F101/34
Abstract: A catalyst for wastewater treatment is disclosed. The catalyst includes a porous carrier, iron oxide impregnated into the pores of the porous carrier, and platinum impregnated into the pores and mixed with the iron oxide in the pores. Also disclosed are a method for preparing the catalyst and a method for wastewater treatment using the catalyst.
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公开(公告)号：US12017202B2
公开(公告)日：2024-06-25
申请号：US17533693
申请日：2021-11-23
Inventor： Jungkyu Choi , Kwan-Young Lee , Jinseong Kim , Eunhee Jang , Layoung Choi
CPC classification number: B01J20/186 , B01D53/02 , B01J20/28016 , B01J20/28085 , B01J20/3057 , B01J20/3078 , B01D2253/1085 , B01D2253/304 , B01J2220/42
Abstract: Disclosed are a hydrocarbon adsorption and desorption complex that reduces emission of hydrocarbon from vehicle exhaust gas and improves hydrothermal stability of a device, and a method for preparing the same. The hydrocarbon adsorption and desorption complex may have improved adsorption ability of the hydrocarbon as metal ions are bound to a gas adsorbing portion containing aluminum, and may have improved hydrothermal stability as a reinforcing portion made of silica is formed on a surface of the gas adsorbing portion.
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公开(公告)号：US20180178203A1
公开(公告)日：2018-06-28
申请号：US15795866
申请日：2017-10-27
Inventor： Kwan-Young Lee , Chan Hun Kim , Gwang-Sik Jeong , Young Gul Hur
CPC classification number: B01J27/22 , B01J23/30 , B01J35/0013 , B01J35/002 , B01J35/0073 , B01J35/023 , B01J35/08 , B01J37/0018 , B01J37/0236 , B01J37/031 , B01J37/14 , B01J37/16 , B01J37/18 , C10G47/12
Abstract: Disclosed is a method of synthesizing nano-sized tungsten-silica core-shell particles by a silica-based sol-gel process. According to the method, tungsten-silica nanoparticles are very easy to synthesize by a simple process at ambient pressure and temperature. In addition, tungsten oxide-silica (WOx@SiO2) nanoparticles including tungsten in a stable oxidation state can be synthesized. In the tungsten oxide-silica nanoparticles, the size of the tungsten protected with the silica shell can be maintained in the nanometer range without further processing. Also disclosed is a method of synthesizing nano-sized tungsten oxide (WOx) and tungsten carbide (WC) particles by further processing of the tungsten-silica core-shell particles.
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9.发明申请公开(公告)号：US20180056277A1
公开(公告)日：2018-03-01
申请号：US15365012
申请日：2016-11-30
Applicant: Korea University Research and Business Foundation , Korea Institute of Science and Technology
Inventor： Kwan-Young Lee , Myung-gi Seo , Sang Soo Han , Ho Joong Kim , Deok-Yeon Jo , Young-Hoon Cho
IPC: B01J23/44 , B01J35/00 , B01J35/02 , C01B15/029
CPC classification number: B01J23/44 , B01J35/0013 , B01J35/002 , B01J35/006 , B01J35/0086 , B01J35/023 , C01B15/029
Abstract: Disclosed is a core-shell structured nanocatalyst for hydrogen peroxide production. The core-shell structured nanocatalyst includes a core composed of spherical silica immobilized with noble metal nanoparticles and a mesoporous shell surrounding the core. The use of the nanocatalyst with a mesoporous shell for the production of hydrogen peroxide from hydrogen and oxygen ensures high hydrogen conversion and hydrogen peroxide production rate compared to the use of conventional nanoparticle catalysts with a microporous shell. Also disclosed is a method for hydrogen peroxide production using the nanocatalyst.
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10.发明申请公开(公告)号：US20170282160A1
公开(公告)日：2017-10-05
申请号：US15508227
申请日：2015-01-07
Inventor： Kwan-Young Lee , Myung-gi Seo , Seongmin Kim , Ha Eun Jeong
CPC classification number: B01J23/44 , B01J13/14 , B01J21/12 , B01J23/40 , B01J35/0013 , B01J35/002 , B01J35/006 , B01J35/0086 , B01J35/1019 , B01J37/0072 , B01J37/009 , B01J37/0221 , C01B15/029
Abstract: This invention relates to core-shell nanoparticles having acid sites, a method of manufacturing the same, and a method of directly producing hydrogen peroxide using the same.
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