Pure- and mixed-gas propylene/propane permeation properties of spiro- and triptycene-based microporous polyimides

Handle URI:
http://hdl.handle.net/10754/556537
Title:
Pure- and mixed-gas propylene/propane permeation properties of spiro- and triptycene-based microporous polyimides
Authors:
Swaidan, Ramy Jawdat ( 0000-0002-0606-916X ) ; Ghanem, Bader ( 0000-0002-2044-2434 ) ; Swaidan, Raja ( 0000-0002-9296-6501 ) ; Litwiller, Eric ( 0000-0001-5366-0967 ) ; Pinnau, Ingo ( 0000-0003-3040-9088 )
Abstract:
Solution-processable polyimides of intrinsic microporosity (PIM-PIs) comprising relatively inflexible and contorted backbones have demonstrated outstanding molecular-sieving behavior in membrane-based separation of gas/gas pairs. In this work, the effects of systematically increasing intra-chain rigidity on the propylene/propane separation properties were compared for PIM-PIs made from 2,3,5,6-tetramethyl-1,4-phenylene diamine (TMPD) and (i) spiro-centered dianhyride (SPDA-TMPD or PIM-PI-1) and (ii) 9,10-diisopropyltriptycene-based dianhydride (TPDA-TMPD or KAUST PI-1). Pure-gas experiments at 2 bar and 35 oC showed significant increases in C3H6 permeability and C3H6/C3H8 selectivity by transitioning from PIM-PI-1 (P(C3H6)=393 Barrer, α(C3H6/C3H8)=6) to KAUST-PI-1 (P(C3H6)=817 Barrer, α(C3H6/C3H8)=16), positioning KAUST-PI-1 considerably above the experimentally observed pure-gas C3H6/C3H8 polymer upper bound. However, 50:50 C3H6/C3H8 mixed-gas feeds induced significant losses in C3H6 permeability and C3H6/C3H8 selectivity relative to the 2 bar pure-gas data for PIM-PI-1 and KAUST-PI-1 as the C3H6/C3H8 selectivity dropped from 6 to 3 and 16 to 5, respectively, at 2 bar C3H6 partial pressure due to plasticization and competitive sorption.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division
Citation:
Pure- and mixed-gas propylene/propane permeation properties of spiro- and triptycene-based microporous polyimides 2015 Journal of Membrane Science
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
3-Jun-2015
DOI:
10.1016/j.memsci.2015.05.044
Type:
Article
ISSN:
03767388
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0376738815004743
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.authorSwaidan, Ramy Jawdaten
dc.contributor.authorGhanem, Baderen
dc.contributor.authorSwaidan, Rajaen
dc.contributor.authorLitwiller, Ericen
dc.contributor.authorPinnau, Ingoen
dc.date.accessioned2015-06-07T21:48:18Zen
dc.date.available2015-06-07T21:48:18Zen
dc.date.issued2015-06-03en
dc.identifier.citationPure- and mixed-gas propylene/propane permeation properties of spiro- and triptycene-based microporous polyimides 2015 Journal of Membrane Scienceen
dc.identifier.issn03767388en
dc.identifier.doi10.1016/j.memsci.2015.05.044en
dc.identifier.urihttp://hdl.handle.net/10754/556537en
dc.description.abstractSolution-processable polyimides of intrinsic microporosity (PIM-PIs) comprising relatively inflexible and contorted backbones have demonstrated outstanding molecular-sieving behavior in membrane-based separation of gas/gas pairs. In this work, the effects of systematically increasing intra-chain rigidity on the propylene/propane separation properties were compared for PIM-PIs made from 2,3,5,6-tetramethyl-1,4-phenylene diamine (TMPD) and (i) spiro-centered dianhyride (SPDA-TMPD or PIM-PI-1) and (ii) 9,10-diisopropyltriptycene-based dianhydride (TPDA-TMPD or KAUST PI-1). Pure-gas experiments at 2 bar and 35 oC showed significant increases in C3H6 permeability and C3H6/C3H8 selectivity by transitioning from PIM-PI-1 (P(C3H6)=393 Barrer, α(C3H6/C3H8)=6) to KAUST-PI-1 (P(C3H6)=817 Barrer, α(C3H6/C3H8)=16), positioning KAUST-PI-1 considerably above the experimentally observed pure-gas C3H6/C3H8 polymer upper bound. However, 50:50 C3H6/C3H8 mixed-gas feeds induced significant losses in C3H6 permeability and C3H6/C3H8 selectivity relative to the 2 bar pure-gas data for PIM-PI-1 and KAUST-PI-1 as the C3H6/C3H8 selectivity dropped from 6 to 3 and 16 to 5, respectively, at 2 bar C3H6 partial pressure due to plasticization and competitive sorption.en
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0376738815004743en
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, 3 June 2015. DOI: 10.1016/j.memsci.2015.05.044en
dc.subjectPolyimideen
dc.subjectGas separationen
dc.subjectPolymers of intrinsic microporosityen
dc.subjectPlasticizationen
dc.subjectOlefin/paraffin separationen
dc.titlePure- and mixed-gas propylene/propane permeation properties of spiro- and triptycene-based microporous polyimidesen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJournal of Membrane Scienceen
dc.eprint.versionPost-printen
kaust.authorGhanem, Baderen
kaust.authorSwaidan, Rajaen
kaust.authorLitwiller, Ericen
kaust.authorPinnau, Ingoen
kaust.authorSwaidan, Ramy Jawdaten
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