Unobstructed Ultrathin Gas Transport Channels in Composite Membranes by Interfacial Self-Assembly.
basic_science · Level V
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- Record sourced from PubMed, PMID 32329145.
- Also identified by DOI 10.1002/adma.201907701.
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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<sub>2</sub> /N<sub>2</sub> (15/85 by volume) mixed gas, the MMMs achieve a high CO<sub>2</sub> permeance of 823 gas permeation units and CO<sub>2</sub> /N<sub>2</sub> selectivity of 242 at 0.5 MPa. Based on economic analyses, a two-stage membrane process can achieve gas separation and economic targets.