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dc.contributor.authorSalinas, Octavio
dc.contributor.authorMa, Xiaohua
dc.contributor.authorLitwiller, Eric
dc.contributor.authorPinnau, Ingo
dc.date.accessioned2016-01-10T10:33:48Z
dc.date.available2016-01-10T10:33:48Z
dc.date.issued2016-01-05
dc.identifier.citationEthylene/ethane permeation, diffusion and gas sorption properties of carbon molecular sieve membranes derived from the prototype ladder polymer of intrinsic microporosity (PIM-1) 2016 Journal of Membrane Science
dc.identifier.issn03767388
dc.identifier.doi10.1016/j.memsci.2015.12.052
dc.identifier.urihttp://hdl.handle.net/10754/593144
dc.description.abstractFine-tuning the microporosity of PIM-1 by heat treatment was applied to develop a suitable carbon molecular sieve membrane for ethylene/ethane separation. Pristine PIM-1 films were heated from 400 to 800 °C under inert N2 atmosphere (< 2 ppm O2). At 400 °C, PIM-1 self-cross-linked and developed polar carbonyl and hydroxyl groups due to partial dioxane splitting in the polymer backbone. Significant degradation occurred at 600 °C due to carbonization of PIM-1 and resulted in 30% increase in cumulative surface area compared to its cross-linked predecessor. In addition, PIM-1-based CMS developed smaller ultramicropores with increasing pyrolysis temperature, which enhanced their molecular sieving capability by restricted diffusion of ethylene and ethane through the matrix due to microstructural carbon densification. Consequently, the pure-gas ethylene permeability (measured at 35 °C and 2 bar) decreased from 1600 Barrer for the pristine PIM-1 to 1.3 Barrer for the amorphous carbon generated at 800 °C, whereas the ethylene/ethane pure-gas selectivity increased significantly from 1.8 to 13.
dc.language.isoen
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0376738815304002
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, 5 January 2016. DOI: 10.1016/j.memsci.2015.12.052
dc.subjectEthylene/ethane separation
dc.subjectIntrinsically microporous polymer
dc.subjectPIM-1
dc.subjectCarbon molecular sieve
dc.titleEthylene/ethane permeation, diffusion and gas sorption properties of carbon molecular sieve membranes derived from the prototype ladder polymer of intrinsic microporosity (PIM-1)
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.personSalinas, Octavio
kaust.personMa, Xiaohua
kaust.personLitwiller, Eric
kaust.personPinnau, Ingo
refterms.dateFOA2018-01-05T00:00:00Z
dc.date.published-online2016-01-05
dc.date.published-print2016-04


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