A Highly Permeable Aligned Montmorillonite Mixed-Matrix Membrane for CO2 Separation

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• 作者：Dr. Zhihua Qiao ; Dr. Song Zhao ; Prof. Dr. Jixiao Wang ; Prof. Dr. Shichang Wang ; Prof. Dr. Zhi Wang and Prof. Dr. Michael D. Guiver
• 刊名：Angewandte Chemie
• 出版年：2016
• 出版时间：August 1, 2016
• 年：2016
• 卷：128
• 期：32
• 页码：9467-9471
• 全文大小：3631K
• ISSN：1521-3757

文摘

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 CO₂ separation. High-speed gas-transport channels are formed by the aligned interlayer gaps of the modified montmorillonite, through which CO₂ transport primarily occurs. High CO₂ permeance of about 800 GPU is achieved combined with a high mixed-gas selectivity for CO₂ that is stable over a period of 600 h and independent of the water content in the feed.