Show simple item record

dc.contributor.authorAlaslai, Nasser Y.
dc.contributor.authorGhanem, Bader
dc.contributor.authorAlghunaimi, Fahd
dc.contributor.authorLitwiller, Eric
dc.contributor.authorPinnau, Ingo
dc.date.accessioned2016-01-07T08:09:33Z
dc.date.available2016-01-07T08:09:33Z
dc.date.issued2016-01-05
dc.identifier.citationPure- and Mixed-Gas Permeation Properties of Highly Selective and Plasticization Resistant Hydroxyl-Diamine-Based 6FDA Polyimides for CO2/CH4 Separation 2016 Journal of Membrane Science
dc.identifier.issn03767388
dc.identifier.doi10.1016/j.memsci.2015.12.053
dc.identifier.urihttp://hdl.handle.net/10754/593035
dc.description.abstractThe effect of hydroxyl functionalization on the m-phenylene diamine moiety of 6FDA dianhydride-based polyimides was investigated for gas separation applications. Pure-gas permeability coefficients of He, H2, N2, O2, CH4, and CO2 were measured at 35 °C and 2 atm. The introduction of hydroxyl groups in the diamine moiety of 6FDA-diaminophenol (DAP) and 6FDA-diamino resorcinol (DAR) polyimides tightened the overall polymer structure due to increased charge transfer complex formation compared to unfunctionalized 6FDA-m-phenylene diamine (mPDA). The BET surface areas based on nitrogen adsorption of 6FDA-DAP (54 m2g−1) and of 6FDA-DAR (45 m2g−1) were ~18% and 32% lower than that of 6FDA-mPDA (66 m2g−1). 6FDA-mPDA had a pure-gas CO2 permeability of 14 Barrer and CO2/CH4 selectivity of 70. The hydroxyl-functionalized polyimides 6FDA-DAP and 6FDA-DAR exhibited very high pure-gas CO2/CH4 selectivities of 92 and 94 with moderate CO2 permeability of 11 and 8 Barrer, respectively. It was demonstrated that hydroxyl-containing polyimide membranes maintained very high CO2/CH4 selectivity (~ 75 at CO2 partial pressure of 10 atm) due to CO2 plasticization resistance when tested under high-pressure mixed-gas conditions. Functionalization with hydroxyl groups may thus be a promising strategy towards attaining highly selective polyimides for economical membrane-based natural gas sweetening.
dc.language.isoen
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0376738815304038
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.2015.12.053
dc.subjectPolyimides
dc.subject6FDA
dc.subjectHydroxyl functionalization
dc.subjectNatural gas
dc.subjectMixed-gas permeation
dc.subjectPlasticization
dc.titlePure- and Mixed-Gas Permeation Properties of Highly Selective and Plasticization Resistant Hydroxyl-Diamine-Based 6FDA Polyimides for CO2/CH4 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.journalJournal of Membrane Science
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.personLitwiller, Eric
kaust.personPinnau, Ingo
refterms.dateFOA2018-01-05T00:00:00Z
dc.date.published-online2016-01-05
dc.date.published-print2016-05


Files in this item

Thumbnail
Name:
1-s2.0-S0376738815304038-main.pdf
Size:
1.568Mb
Format:
PDF
Description:
Accepted Manuscript
Thumbnail
Name:
1-s2.0-S0376738815304038-fx1.jpg
Size:
33.74Kb
Format:
JPEG image
Description:
Graphical abstract

This item appears in the following Collection(s)

Show simple item record