-
公开(公告)号：US09981852B2
公开(公告)日：2018-05-29
申请号：US14224258
申请日：2014-03-25
Inventor： Jungkyu Choi , Eunjoo Kim , Wanxi Cai
CPC classification number: C01B39/48 , B01J20/18 , B01J20/28033 , B01J20/28035 , B01J20/3214 , B01J20/3238 , B01J29/7015 , B01J35/065 , B01J37/0215 , B01J2229/26
Abstract: Provided is a selective sonication-assisted deposition method of inorganic particles and CHA zeolite membranes grown from seeded uniform layers on substrates using the method and plate-like Si-CHA zeolite particles used for seed layer formation and manufacturing method of the same, in which thin inorganic particles may be selectively deposited on a substrate or on a support, and even a physical interaction between the deposited particles and supports (or substrates) alone allows for obtaining high surface coverage to form a uniform layer, which is critical in reproducible production of membranes of inorganic materials, such as zeolite, by secondary growth.
-
公开(公告)号：US12214320B2
公开(公告)日：2025-02-04
申请号：US17763628
申请日：2020-09-24
Inventor： Jungkyu Choi , Kwan-Young Lee , Sungwon 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.
-
公开(公告)号：US12036517B2
公开(公告)日：2024-07-16
申请号：US17897798
申请日：2022-08-29
Inventor： Jungkyu Choi , Kwan Young Lee , Sung-Won Hong
CPC classification number: B01D71/0281 , B01D69/108 , B01D2257/504 , B01D2258/0283 , B01D2311/2626 , B01D2323/08 , B01D2323/12 , B01D2323/24 , B01D2325/02
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.
-
24.发明公开公开(公告)号：US20230191362A1
公开(公告)日：2023-06-22
申请号：US18163914
申请日：2023-02-03
Applicant: Hyundai Motor Company , Kia Corporation , Korea University Research and Business Foundation
Inventor： Jungkyu Choi , Kwan Young Lee , Eun-Hee Jang , Chang Hwan Kim , Chun Yong Kang
IPC: B01J20/18 , B01D53/02 , B01J29/46 , B01J29/76 , B01D53/04 , B01J20/32 , B01J20/34 , B01D53/94 , B01J20/06 , B01J20/28 , B01J20/30 , F01N3/08
CPC classification number: B01J20/18 , B01D53/02 , B01J29/46 , B01J29/7615 , B01D53/04 , B01J20/3204 , B01J20/3221 , B01J20/3408 , B01J20/3483 , B01D53/9486 , B01J20/06 , B01J20/28016 , B01J20/28071 , B01J20/28083 , B01J20/3057 , B01J20/3236 , B01J20/3293 , F01N3/0835 , B01D2253/1085 , B01D2253/25 , B01D2257/7022 , B01D2259/40088 , B01D2253/1124 , B01D2253/308 , B01D2253/311 , B01D2257/7027 , B01D2253/108
Abstract: The present invention relates to a hydrocarbon adsorbent with metal-impregnated zeolite particles having regular mesopores and a manufacturing method therefor. The hydrocarbon adsorbent includes a metal cation and a metal oxide that are impregnated in zeolite particles, in particular, the zeolite particles include regularly formed mesopores having a size of 2 to 10. By adjusting a Si/Al ratio and mesoporosity of the mesopores, a hydrocarbon adsorbent may have increased adsorption capacity for hydrocarbons in a cold-start section and can rapidly oxidize the hydrocarbon upon desorption thereof, thereby reducing the discharge of exhaust gas produced in automobiles and industries.
-
Patent Agency Ranking
25.发明申请公开(公告)号：US20220152601A1
公开(公告)日：2022-05-19
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.
-
公开(公告)号：US20220152600A1
公开(公告)日：2022-05-19
申请号：US17357435
申请日：2021-06-24
Applicant: Hyundai Motor Company , Kia Corporation , Korea University Research and Business Foundation
Inventor： Chun Yong Kang , Chang Hwan Kim , Jungkyu Choi , Eun-Hee Jang , Jin Seong Kim , Hwiyoon Noh , La Young Choi
Abstract: A catalyst for adsorbing hydrocarbon includes a first catalyst configured to adsorb short-chain hydrocarbons and including zeolites having a pore size of about 0.30 nm to about 0.44 nm and a second catalyst configured to adsorb a long-chain hydrocarbon and including zeolites ion-exchanged with a transition metal. The catalyst can be coated on a substrate of a hydrocarbon trap.
-
公开(公告)号：US11285444B2
公开(公告)日：2022-03-29
申请号：US16920336
申请日：2020-07-02
Inventor： Jungkyu Choi , Kwan Young Lee , Sung-Won Hong
Abstract: Disclosed are a method of preparing carbon-dioxide-selective separation membranes by controlling calcination conditions including rapid thermal processing and separation membranes produced thereby. More particularly, disclosed are a method of preparing carbon-dioxide-selective separation membranes that can improve CO2 permselectivity, particularly, exhibit excellent CO2 permselectivity in the presence of water in the feed gas, by controlling the size of defects in the separation membranes using rapid thermal processing, separation membranes produced thereby, and a method of capturing and removing carbon dioxide using the separation membranes.
-
公开(公告)号：US20220072506A1
公开(公告)日：2022-03-10
申请号：US17526957
申请日：2021-11-15
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.
-
公开(公告)号：US11027241B2
公开(公告)日：2021-06-08
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.
-
-
-
-
-
-
-
-
Search Results
29
records
(took 0.115 seconds)
