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公开(公告)号：US20220161226A1
公开(公告)日：2022-05-26
申请号：US17533597
申请日：2021-11-23
Inventor： Jungkyu CHOI , Kwan-Young LEE , Jinseong KIM , Eunhee JANG , Hwiyoon NOH
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：US20190321785A1
公开(公告)日：2019-10-24
申请号：US16388917
申请日：2019-04-19
Inventor： Jungkyu CHOI , Kwan Young LEE , Sung-Won HONG
Abstract: The present invention relates to a method of post-treating a zeolite membrane, comprising treating a defective zeolite membrane with a chemical material such as a dye molecule, which has a size larger than that of the pores of the zeolite membranes and smaller than defects in the membrane, thereby healing the defects in the membrane. The post-treatment method performs post-treatment of the zeolite membrane under mild conditions (room temperature and normal pressure), thereby selectively healing the defects in the zeolite membrane and improving the performance of the zeolite membrane. In addition, the method may provide a high-performance membrane having a high separation factor, particularly under dry conditions.
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公开(公告)号：US20210362099A1
公开(公告)日：2021-11-25
申请号：US17326649
申请日：2021-05-21
Inventor： Jungkyu CHOI , Yanghwan JEONG
IPC: B01D71/02
Abstract: Disclosed are a MWW/DDR type gas separation membrane comprising at least one MWW type zeolite and at least one DDR type zeolite and a method for preparing the same. One of the MWW type zeolite and the DDR type zeolite is disposed on the other thereof, wherein at least one of the MWW type zeolite and the DDR type zeolite is epitaxially grown. In the gas separation membrane, the DDR type zeolite is epitaxially grown from the MWW type zeolite, or the MWW type zeolite is epitaxially grown from the DDR type zeolite. Thus, the MWW/DDR type gas separation membrane is synthesized using a structural continuity of the MWW type zeolite and the DDR type zeolite. Thus, the gas separation membrane has excellent separation efficiency.
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4.发明申请公开(公告)号：US20190143296A1
公开(公告)日：2019-05-16
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：US20230173455A1
公开(公告)日：2023-06-08
申请号：US18102238
申请日：2023-01-27
Inventor： Chun Yong KANG , Chang Hwan KIM , Jungkyu CHOI , Eunhee JANG , Jin Seong KIM , La Young CHOI
CPC classification number: B01J20/183 , B01J20/0237 , B01J20/28007 , B01D53/9445 , B01D53/02 , B01D2255/912 , B01D2253/1085 , B01D2257/702 , B01D2259/4566
Abstract: A hydrocarbon adsorbent according to one exemplary embodiment of the present invention includes a beta zeolite containing copper, in which a Si/Al molar ratio of the beta zeolite is 12.5 to 150, and the amount of the copper contained is 1 wt % to 10 wt %.
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Patent Agency Ranking
公开(公告)号：US20210047193A1
公开(公告)日：2021-02-18
申请号：US16993479
申请日：2020-08-14
Inventor： Jungkyu CHOI , Kwan Young LEE , Eun-Hee JANG
IPC: C01B39/02 , C01B39/48 , B01J29/70 , B01J35/00 , B01J37/04 , B01J37/08 , B01J20/18 , B01J20/30 , C01B3/56
Abstract: Disclosed are a method of preparing a zeolite nanosheet and a zeolite nanosheet particle prepared thereby, and more particularly a method of preparing a zeolite nanosheet capable of preparing a monolayer zeolite nanosheet through a simple process of mixing a multilayer zeolite precursor with a swelling agent to swell the multilayer zeolite precursor and drying and calcining the multilayer zeolite precursor, wherein the monolayer zeolite nanosheet is useful to separate a catalyst or gas, and a zeolite nanosheet particle prepared thereby.
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公开(公告)号：US20200206697A1
公开(公告)日：2020-07-02
申请号：US16729587
申请日：2019-12-30
Inventor： Jungkyu CHOI , Kwan Young LEE , Sung-Won HONG
Abstract: Disclosed are a CHA zeolite membrane and a method of preparing the same, and more particularly, a CHA zeolite membrane having high capacity to separate CO2/N2 and CO2/CH4 even under wet conditions using a membrane produced using a synthetic precursor having a controlled ratio of Si and Al, a method of preparing the same, and a method of capturing and removing carbon dioxide using the membrane.
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公开(公告)号：US20250050282A1
公开(公告)日：2025-02-13
申请号：US18928720
申请日：2024-10-28
Inventor： Jungkyu CHOI , Kwan Young LEE , Sung-Won HONG
Abstract: The present invention relates to a separator membrane having a hierarchical structure, a production method therefor and a xylene separation method using same, and to: a separator membrane having a hierarchical structure comprising mesopores, the separator membrane having mesopores introduced inside a microporous zeolite separator membrane, thereby being thin, having less defects and exhibiting high xylene permeation and separation performance; a production method therefor; and a xylene separation method using same.
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公开(公告)号：US20230001361A1
公开(公告)日：2023-01-05
申请号：US17901191
申请日：2022-09-01
Inventor： Jungkyu CHOI , Kwan Young LEE , Yang-Hwan JEONG
Abstract: Disclosed are a heterogeneous zeolite membrane and a method of preparing the same, and more particularly a heterogeneous zeolite membrane that has CHA and DDR zeolite structures by growing seed particles into a crystal structure different from that of the zeolite membrane and can thus separate CO2/N2 and CO2/CH4 even under wet conditions, a method of preparing the same, and a method of capturing and removing carbon dioxide using the membrane.
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公开(公告)号：US20220161227A1
公开(公告)日：2022-05-26
申请号：US17533712
申请日：2021-11-23
Inventor： Jungkyu CHOI , Kwan-Young LEE , Jinseong KIM , Eunhee JANG
Abstract: Disclosed are a hydrocarbon adsorption and desorption complex including zeolite with a controlled cation type and a preparation method therefor. The hydrocarbon adsorption and desorption complex exhibits excellent hydrocarbon adsorption and oxidation performance even at a temperature lower than a catalyst activation temperature by controlling the distribution of metal ions and metal oxides, and also exhibits excellent hydrocarbon adsorption and oxidation performance even in the presence of water, by being prepared through hydrothermal treatment.
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