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Unobstructed Ultrathin Gas Transport Channels in Composite Membranes by Interfacial Self‐Assembly
Author(s) -
Wang Bo,
Qiao Zhihua,
Xu Jiayou,
Wang Jixiao,
Liu Xinlei,
Zhao Song,
Wang Zhi,
Guiver Michael D.
Publication year - 2020
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201907701
Subject(s) - permeance , membrane , materials science , permeation , gas separation , polymer , chemical engineering , selectivity , composite number , layer (electronics) , nanotechnology , composite material , organic chemistry , catalysis , chemistry , biochemistry , engineering
Ultrathin unobstructed gas transport channels through the membrane selective layer are constructed in mixed matrix membranes (MMMs) by using gravity‐induced interface self‐assembly of poly(vinylamine) and polymer‐modified MIL‐101(Cr). For CO 2 /N 2 (15/85 by volume) mixed gas, the MMMs achieve a high CO 2 permeance of 823 gas permeation units and CO 2 /N 2 selectivity of 242 at 0.5 MPa. Based on economic analyses, a two‐stage membrane process can achieve gas separation and economic targets.