Unobstructed Ultrathin Gas Transport Channels in Composite Membranes by Interfacial Self‐Assembly
Bo Wang, Zhihua Qiao, Jiayou Xu, Jixiao Wang, Xinlei Liu, Song Zhao, Zhi Wang, Michael D. Guiver
Abstract
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 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.
Topics & Concepts
PermeanceMaterials scienceMembranePermeationGas separationPolymerChemical engineeringComposite numberSelectivityLayer (electronics)NanotechnologyComposite materialOrganic chemistryCatalysisChemistryBiochemistryEngineeringMembrane Separation and Gas TransportCovalent Organic Framework ApplicationsMuon and positron interactions and applications