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dc.contributor.authorAlaslai, Nasser Y.
dc.contributor.authorGhanem, Bader
dc.contributor.authorAlghunaimi, Fahd
dc.contributor.authorPinnau, Ingo
dc.date.accessioned2016-03-23T08:49:55Z
dc.date.available2016-03-23T08:49:55Z
dc.date.issued2016-03-22
dc.identifier.citationHigh-performance intrinsically microporous dihydroxyl-functionalized triptycene-based polyimide for natural gas separation 2016 Polymer
dc.identifier.issn00323861
dc.identifier.doi10.1016/j.polymer.2016.03.063
dc.identifier.urihttp://hdl.handle.net/10754/603539
dc.description.abstractA novel polyimide of intrinsic microporosity (PIM-PI) was synthesized from a 9,10-diisopropyl-triptycene-based dianhydride (TPDA) and dihydroxyl-functionalized 4,6-diaminoresorcinol (DAR). The unfunctionalized TPDA-m-phenylenediamine (mPDA) polyimide derivative was made as a reference material to evaluate the effect of the OH group in TPDA-DAR on its gas transport properties. Pure-gas permeability coefficients of He, H2, N2, O2, CH4, and CO2 were measured at 35 °C and 2 atm. The BET surface area based on nitrogen adsorption of dihydroxyl-functionalized TPDA-DAR (308 m2g-1) was 45% lower than that of TPDA-mPDA (565 m2g-1). TPDA-mPDA had a pure-gas CO2 permeability of 349 Barrer and CO2/CH4 selectivity of 32. The dihydroxyl-functionalized TPDA-DAR polyimide exhibited enhanced pure-gas CO2/CH4 selectivity of 46 with a moderate decrease in CO2 permeability to 215 Barrer. The CO2 permeability of TPDA-DAR was ∼30-fold higher than that of a commercial cellulose triacetate membrane coupled with 39% higher pure-gas CO2/CH4 selectivity. The TPDA-based dihydroxyl-containing polyimide showed good plasticization resistance and maintained high mixed-gas selectivity of 38 when tested at a typical CO2 natural gas wellhead CO2 partial pressure of 10 atm.
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).
dc.language.isoen
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0032386116302099
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Polymer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Polymer, 22 March 2016. DOI: 10.1016/j.polymer.2016.03.063
dc.subjecttriptycene polyimides
dc.subjecthydroxyl functionalization
dc.subjectmixed-gas permeation
dc.titleHigh-performance intrinsically microporous dihydroxyl-functionalized triptycene-based polyimide for natural gas separation
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalPolymer
dc.eprint.versionPost-print
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personAlaslai, Nasser Y.
kaust.personGhanem, Bader
kaust.personAlghunaimi, Fahd
kaust.personPinnau, Ingo
refterms.dateFOA2018-03-22T00:00:00Z
dc.date.published-online2016-03-22
dc.date.published-print2016-05


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