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公开(公告)号：US20240149254A1
公开(公告)日：2024-05-09
申请号：US18121922
申请日：2023-03-15
发明人： Chun Yong Kang , Eunhee Jang , Jungkyu Choi , Jaehee Shim , Jin Seong Kim
CPC分类号： B01J29/7215 , B01J6/001 , B01J20/165 , B01J20/3078 , B01J20/3204 , B01J37/0209 , B01J37/0236 , B01J37/10
摘要： Provided herein are a method for producing a hydrocarbon adsorption catalyst includes dealuminated zeolite by heat-treating a zeolite in moisture-containing air at a first temperature to remove a portion of aluminum included in the zeolite, and supporting a metal on a carrier including the zeolite after the heat-treating and a hydrocarbon adsorption catalyst prepared using the same method. The metal-supported support may be additionally heat-treated in moisture-containing air at a second temperature that is higher than the first temperature.
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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
发明人： Jungkyu Choi , Kwan-Young Lee , Jinseong Kim , Eunhee Jang , Layoung Choi
CPC分类号： B01J20/186 , B01D53/02 , B01J20/28016 , B01J20/28085 , B01J20/3057 , B01J20/3078 , B01D2253/1085 , B01D2253/304 , B01J2220/42
摘要： 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：US20220072506A1
公开(公告)日：2022-03-10
申请号：US17526957
申请日：2021-11-15
发明人： Jungkyu Choi , Kwan-Young Lee , Eunhee Jang
IPC分类号： B01J20/18 , C01B39/46 , B01J20/28 , B01J20/30 , B01D53/04 , B01D71/02 , B01D53/22 , B01D67/00
摘要： 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：US11666886B2
公开(公告)日：2023-06-06
申请号：US17533597
申请日：2021-11-23
发明人： Jungkyu Choi , Kwan-Young Lee , Jinseong Kim , Eunhee Jang , Hwiyoon Noh
CPC分类号： B01J20/18 , B01J23/78 , F01N3/0835 , F01N3/101 , F01N3/0828 , F01N2240/18 , F01N2250/12 , F01N2370/04 , F01N2370/24 , F01N2510/063 , F01N2550/03 , F01N2570/12
摘要： 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
发明人： Jungkyu Choi , Kwan-Young Lee , Eunhee Jang
IPC分类号： B01J20/18 , C01B39/46 , B01J20/28 , B01J20/30 , B01D53/04 , B01D71/02 , B01D53/22 , B01D67/00
摘要： 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：US10695722B2
公开(公告)日：2020-06-30
申请号：US15935652
申请日：2018-03-26
发明人： Jungkyu Choi , Kwan Young Lee , Eunhee Jang
IPC分类号： B01D67/00 , C01B3/56 , B01D71/02 , B01D71/06 , B01D69/02 , B01D53/22 , B01D69/12 , B01D69/10
摘要： The present invention relates to a method of preparing a perm-selective porous membrane and a method of separating gases using the prepared porous membrane. According to the present invention, a membrane is synthesized using a hierarchically structured alumina porous support by a counter diffusion method. During this synthesis, the diffusion rate of metal ions loaded on the porous support is controlled by controlling the pore size of the porous support, and the position at which the membrane is synthesized is controlled by synthesizing the membrane inside the support. This can increase the physical stability of the membrane and make the membrane thicker so as to ensure higher H2/CO2 separation factors.
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