Highly Scalable ZIF-Based Mixed-Matrix Hollow Fiber Membranes for Advanced Hydrocarbon Separations

Highly Scalable ZIF-Based Mixed-Matrix Hollow Fiber Membranes for Advanced Hydrocarbon SeparationsHighlyScalableZIF-BasedMixed-MatrixHollowFiberMembranesforAdvancedHydrocarbonSeparationsChenZhang,KuangZhang,LirenXu,YingLabreche,BrianKraftschik,andWilliamJ.KorosSchoolofChemical&BiomolecularEngineering,GeorgiaInstituteofTechnology,Atlanta,GA30332DOI10.1002/aic.14496PublishedonlineMay29,2014inWileyOnlineLibrary(wileyonlinelibrary.com)ZIF-8/6FDA-DAM,aprovenmixed-matrixmaterialthatdemonstratedremarkablyenhancedC3H6/C3H8selectivityindensefilmgeometry,wasextendedtoscalablehollowfibergeometryinthecurrentwork.Wesuccessfullyformeddual-layerZIF-8/6FDA-DAMmixed-matrixhollowfibermembraneswithZIF-8nanoparticleloadingupto30wt%usingtheconventionaldry-jet/wet-quenchfiberspinningtechnique.Themixed-matrixhollowfibersshowedsignificantlyenhancedC3H6/C3H8selectivitythatwasconsistentwithmixed-matrixdensefilms.Criticalvariablescontrollingsuccessfulforma-tionofmixed-matrixhollowfibermembraneswithdesirablemorph