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dc.contributor.authorSwaidan, Ramy J.
dc.contributor.authorMa, Xiaohua
dc.contributor.authorLitwiller, Eric
dc.contributor.authorPinnau, Ingo
dc.date.accessioned2015-08-11T10:10:14Z
dc.date.available2015-08-11T10:10:14Z
dc.date.issued2015-08-06
dc.identifier.citationEnhanced propylene/propane separation by thermal annealing of an intrinsically microporous Hydroxyl-functionalized polyimide membrane 2015:JMS151429 Journal of Membrane Science
dc.identifier.issn03767388
dc.identifier.doi10.1016/j.memsci.2015.08.015
dc.identifier.urihttp://hdl.handle.net/10754/565818
dc.description.abstractEffective separation of propylene/propane is vital to the chemical industry where C3H6 is used as feedstock for a variety of important chemicals. The purity requirements are currently met with cryogenic distillation, which is an extremely energy-intensive process. Hybrid arrangements incorporating highly selective membranes (α>20) have been proposed to “debottleneck” the process and potentially improve the economics. Selective and permeable membranes can be obtained by the design of polymers of intrinsic microporosity (PIMs). In this work, a 250 °C annealed polyimide (PIM-6FDA-OH) membrane produced among the highest reported pure-gas C3H6/C3H8 selectivity of 30 for a solution-processable polymer to date. The high selectivity resulted from enhanced diffusivity selectivity due to the formation of inter-chain charge-transfer-complexes. Although there were some inevitable losses in selectivity under 50:50 mixed-gas feed conditions due to competitive sorption, relatively high selectivities were preserved due to enhanced plasticization resistance.
dc.language.isoen
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0376738815301101
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. 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 Journal of Membrane Science, 6 August 2015. DOI: 10.1016/j.memsci.2015.08.015
dc.subjectPolymers of intrinsic microporosity
dc.subjectPolyimide
dc.subjectPropylene/propane separation
dc.subjectPlasticization
dc.subjectThermal annealing
dc.titleEnhanced propylene/propane separation by thermal annealing of an intrinsically microporous Hydroxyl-functionalized polyimide membrane
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.journalJournal of Membrane Science
dc.eprint.versionPost-print
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personMa, Xiaohua
kaust.personLitwiller, Eric
kaust.personPinnau, Ingo
kaust.personSwaidan, Ramy Jawdat
refterms.dateFOA2017-08-06T00:00:00Z
dc.date.published-online2015-08-06
dc.date.published-print2015-12


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