Unobstructed Ultrathin Gas Transport Channels in Composite Membranes by Interfacial Self‐Assembly

作者：Bo Wang, Zhihua Qiao, Jiayou Xu, Jixiao Wang, Xinlei Liu, Song Zhao, Zhi Wang, Michael D. Guiver · 发表于：Advanced Materials · 年份：2020 · DOI：10.1002/adma.201907701 · 被引用次数：128 · 研究领域：Membrane Separation and Gas Transport、Covalent Organic Framework Applications、Muon and positron interactions and applications

Abstract 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 CO2/N2 (15/85 by volume) mixed gas, the MMMs achieve a high CO2 permeance of 823 gas permeation units and CO2/N2 selectivity of 242 at 0.5 MPa. Based on economic analyses, a two‐stage membrane process can achieve gas separation and economic targets.