US 12,214,320 B2
Separator membrane having hierarchical structure comprising mesopores, production method therefor and xylene separation method using same
Jungkyu Choi, Seoul (KR); Kwan-Young Lee, Seoul (KR); and Sungwon Hong, Seoul (KR)
Assigned to Korea University Research and Business Foundation, Seoul (KR)
Appl. No. 17/763,628
Filed by KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, Seoul (KR)
PCT Filed Sep. 24, 2020, PCT No. PCT/KR2020/013000
§ 371(c)(1), (2) Date Mar. 24, 2022,
PCT Pub. No. WO2021/060887, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 10-2019-0118060 (KR), filed on Sep. 25, 2019.
Prior Publication US 2022/0331748 A1, Oct. 20, 2022
Int. Cl. B01D 71/02 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01)
CPC B01D 71/028 (2013.01) [B01D 67/0006 (2013.01); B01D 67/0095 (2013.01); B01D 69/02 (2013.01); B01D 69/106 (2022.08); B01D 2257/7027 (2013.01); B01D 2323/08 (2013.01); B01D 2323/12 (2013.01); B01D 2325/022 (2013.01); B01D 2325/04 (2013.01); B01D 2325/12 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A hierarchically structured zeolite membrane having a thickness of 0.1 to 5 μm and comprising micropores having a size of 2 nm or less and mesopores having a size of 2 to 20 nm,
wherein the hierarchically structured zeolite membrane comprises MFI zeolite and MEL zeolite, and
wherein the mesopores are isolated and embedded between the micropores.