-
Patent Agency Ranking
公开(公告)号：US11458441B2
公开(公告)日：2022-10-04
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.
-
公开(公告)号：US12036516B2
公开(公告)日：2024-07-16
申请号：US17148699
申请日：2021-01-14
Inventor： Jungkyu Choi , Kwan Young Lee , Sung-Won Hong
CPC classification number: B01D71/0281 , B01D67/00411 , B01D69/107 , B01D69/108 , C07B63/00 , C07C7/144 , B01D2323/081 , B01D2323/2181 , C07C15/08
Abstract: The present invention relates to a method of controlling a defect structure in an MFI zeolite membrane and a method of separating xylene isomers using the MFI zeolite membrane produced by the method, and more particularly, to a method of controlling a defect structure in an MFI zeolite membrane that improves the performance of separating a xylene isomer by reducing the amount and size of defects formed in the MFI membrane structure when removing organic-structure-directing agents in the membrane through calcination at a low temperature using ozone.
-
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.
-
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：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
5
records
(took 0.017 seconds)
