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dc.contributor.authorAkhtar, Faheem Hassan
dc.contributor.authorKumar, Mahendra
dc.contributor.authorVillalobos, Luis Francisco
dc.contributor.authorShevate, Rahul
dc.contributor.authorVovusha, Hakkim
dc.contributor.authorSchwingenschlögl, Udo
dc.contributor.authorPeinemann, Klaus-Viktor
dc.date.accessioned2017-09-21T09:25:34Z
dc.date.available2017-09-21T09:25:34Z
dc.date.issued2017-09-13
dc.identifier.citationAkhtar FH, Kumar M, Villalobos LF, Shevate R, Vovusha H, et al. (2017) Polybenzimidazole-based mixed membranes with exceptional high water vapor permeability and selectivity. J Mater Chem A. Available: http://dx.doi.org/10.1039/c7ta05081j.
dc.identifier.issn2050-7488
dc.identifier.issn2050-7496
dc.identifier.doi10.1039/c7ta05081j
dc.identifier.urihttp://hdl.handle.net/10754/625501
dc.description.abstractPolybenzimidazole (PBI), a thermal and chemically stable polymer, is commonly used to fabricate membranes for applications like hydrogen recovery at temperatures of more than 300 °C, fuel cells working in a highly acidic environment, and nanofiltration in aggressive solvents. This report shows for the first time use of PBI dense membranes for water vapor/gas separation applications. They showed an excellent selectivity and high water vapor permeability. Incorporation of inorganic hydrophilic titanium-based nano-fillers into the PBI matrix further increased the water vapor permeability and water vapor/N2 selectivity. The most selective mixed matrix membrane with 0.5 wt% loading of TiO2 nanotubes yielded a water vapor permeability of 6.8×104 Barrer and a H2O/N2 selectivity of 3.9×106. The most permeable membrane with 1 wt% loading of carboxylated TiO2 nanoparticles had a 7.1×104 Barrer water vapor permeability and a H2O/N2 selectivity of 3.1×106. The performance of these membranes in terms of water vapor transport and selectivity is among the highest reported ones. The remarkable ability of PBI to efficiently permeate water versus other gases opens the possibility to fabricate membranes for dehumidification of streams in harsh environments. This includes the removal of water from high temperature reaction mixtures to shift the equilibrium towards products.
dc.description.sponsorshipThe research reported in this publication was supported by the funding from King Abdullah University of Science and Technology (KAUST), Kingdom of Saudi Arabia.
dc.publisherRoyal Society of Chemistry (RSC)
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2017/TA/C7TA05081J#!divAbstract
dc.rightsArchived with thanks to J. Mater. Chem. A
dc.titlePolybenzimidazole-based mixed membranes with exceptional high water vapor permeability and selectivity
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical and Biological Engineering Program
dc.contributor.departmentMaterials Science and Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalJ. Mater. Chem. A
dc.eprint.versionPost-print
kaust.personAkhtar, Faheem Hassan
kaust.personKumar, Mahendra
kaust.personVillalobos, Luis Francisco
kaust.personShevate, Rahul
kaust.personVovusha, Hakkim
kaust.personSchwingenschlögl, Udo
kaust.personPeinemann, Klaus-Viktor


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