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A Highly Permeable Aligned Montmorillonite Mixed‐Matrix Membrane for CO 2 Separation
Author(s) -
Qiao Zhihua,
Zhao Song,
Wang Jixiao,
Wang Shichang,
Wang Zhi,
Guiver Michael D.
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201603211
Subject(s) - polysulfone , montmorillonite , permeance , membrane , materials science , chemical engineering , gas separation , selectivity , matrix (chemical analysis) , substrate (aquarium) , porosity , permeation , composite material , chemistry , polymer , organic chemistry , geology , catalysis , oceanography , biochemistry , engineering
Abstract Highly permeable montmorillonite layers bonded and aligned with the chain stretching orientation of polyvinylamineacid are immobilized onto a porous polysulfone substrate to fabricate aligned montmorillonite/polysulfone mixed‐matrix membranes for CO 2 separation. High‐speed gas‐transport channels are formed by the aligned interlayer gaps of the modified montmorillonite, through which CO 2 transport primarily occurs. High CO 2 permeance of about 800 GPU is achieved combined with a high mixed‐gas selectivity for CO 2 that is stable over a period of 600 h and independent of the water content in the feed.