Polybenzimidazole-based mixed membranes with exceptional high water vapor permeability and selectivity

Handle URI:
http://hdl.handle.net/10754/625501
Title:
Polybenzimidazole-based mixed membranes with exceptional high water vapor permeability and selectivity
Authors:
Akhtar, Faheem Hassan; Kumar, Mahendra ( 0000-0002-9614-904X ) ; Villalobos, Luis Francisco ( 0000-0002-0745-4246 ) ; Shevate, Rahul; Vovusha, Hakkim; Schwingenschlögl, Udo ( 0000-0003-4179-7231 ) ; Peinemann, Klaus-Viktor ( 0000-0003-0309-9598 )
Abstract:
Polybenzimidazole (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.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division
Citation:
Akhtar 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.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
J. Mater. Chem. A
Issue Date:
13-Sep-2017
DOI:
10.1039/c7ta05081j
Type:
Article
ISSN:
2050-7488; 2050-7496
Sponsors:
The research reported in this publication was supported by the funding from King Abdullah University of Science and Technology (KAUST), Kingdom of Saudi Arabia.
Additional Links:
http://pubs.rsc.org/en/Content/ArticleLanding/2017/TA/C7TA05081J#!divAbstract
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAkhtar, Faheem Hassanen
dc.contributor.authorKumar, Mahendraen
dc.contributor.authorVillalobos, Luis Franciscoen
dc.contributor.authorShevate, Rahulen
dc.contributor.authorVovusha, Hakkimen
dc.contributor.authorSchwingenschlögl, Udoen
dc.contributor.authorPeinemann, Klaus-Viktoren
dc.date.accessioned2017-09-21T09:25:34Z-
dc.date.available2017-09-21T09:25:34Z-
dc.date.issued2017-09-13en
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.en
dc.identifier.issn2050-7488en
dc.identifier.issn2050-7496en
dc.identifier.doi10.1039/c7ta05081jen
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.en
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.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2017/TA/C7TA05081J#!divAbstracten
dc.rightsArchived with thanks to J. Mater. Chem. Aen
dc.titlePolybenzimidazole-based mixed membranes with exceptional high water vapor permeability and selectivityen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJ. Mater. Chem. Aen
dc.eprint.versionPost-printen
kaust.authorAkhtar, Faheem Hassanen
kaust.authorKumar, Mahendraen
kaust.authorVillalobos, Luis Franciscoen
kaust.authorShevate, Rahulen
kaust.authorVovusha, Hakkimen
kaust.authorSchwingenschlögl, Udoen
kaust.authorPeinemann, Klaus-Viktoren
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