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dc.contributor.authorAli, Zain
dc.contributor.authorWang, Yingge
dc.contributor.authorOgieglo, Wojciech
dc.contributor.authorPacheco Oreamuno, Federico
dc.contributor.authorVovusha, Hakkim
dc.contributor.authorHan, Yu
dc.contributor.authorPinnau, Ingo
dc.date.accessioned2020-08-13T13:09:56Z
dc.date.available2020-08-13T13:09:56Z
dc.date.issued2020-08-10
dc.date.submitted2020-08-04
dc.identifier.citationAli, Z., Wang, Y., Ogieglo, W., Pacheco, F., Vovusha, H., Han, Y., & Pinnau, I. (2020). Gas separation and water desalination performance of defect-free interfacially polymerized para-linked polyamide thin-film composite membranes. Journal of Membrane Science, 118572. doi:10.1016/j.memsci.2020.118572
dc.identifier.issn0376-7388
dc.identifier.doi10.1016/j.memsci.2020.118572
dc.identifier.urihttp://hdl.handle.net/10754/664581
dc.description.abstractIntroduction of interfacially polymerized (IP) polyamide thin-film composite (TFC) membranes in the 1980s revolutionized the reverse osmosis desalination industry. However, IP-derived TFCs have not achieved industrial success for gas separation applications due to the presence of membrane defects in their dry state. In this work, we report defect-free crosslinked polyamide thin-film composite membranes prepared from para-substituted aromatic and cycloaliphatic diamines, p-phenylenediamine (PPD) and piperazine (PIP), reacted with trimesoyl chloride (TMC). The key parameters in our modified IP process to mitigate defects are long reaction time (∼5 min) and high organic solution temperature (100 °C). The gas separation and desalination properties of the para-linked polyamide membranes were compared to previously reported polyamide TFCs made from meta-phenylenediamine (MPD) and TMC. The gas- and water permeances of the TFCs increased in the order: MPD-TMC < PPD-TMC < PIP-TMC, whereas gas-pair selectivities and salt rejections followed the opposite sequential trend: MPD-TMC > PPD-TMC ≥ PIP-TMC. Elimination of defects allowed exploitation of the ultra-selective nature of polyamide TFCs, specifically for hydrogen and helium separations. At 23 °C, PIP-TMC, PPD-TMC and MPD-TMC exhibited H2/CH4 selectivities of 312, 362 and 1290, respectively, with moderate H2 permeances of 37.4, 32.6 and 25.8 GPU (1 GPU = 10−6 cm3(STP) cm−2 s−1 cmHg−1). Furthermore, the TFCs demonstrated excellent performance for H2/CO2 separation with pure-gas selectivities of 10-14 at 23 °C. The strong size-sieving capability of the polyamide TFCs originated from tight interchain packing induced by strong hydrogen bonding. Wide-angle X-ray diffraction confirmed a dominant fraction of submicropores of less than ∼4 Å within PPD-TMC and PIP-TMC polyamide networks.
dc.description.sponsorshipThe research reported in this publication was supported by funding (BAS/1/1323-01-01) from King Abdullah University of Science and Technology (KAUST).
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0376738820311492
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, [, , (2020-08-10)] DOI: 10.1016/j.memsci.2020.118572 . © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleGas separation and water desalination performance of defect-free interfacially polymerized para-linked polyamide thin-film composite membranes
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentChemical Science Program
dc.contributor.departmentNanostructured Functional Materials (NFM) laboratory
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Membrane Science
dc.rights.embargodate2022-08-10
dc.eprint.versionPost-print
dc.identifier.pages118572
kaust.personAli, Zain
kaust.personWang, Yingge
kaust.personOgieglo, Wojciech
kaust.personPacheco Oreamuno, Federico
kaust.personVovusha, Hakkim
kaust.personHan, Yu
kaust.personPinnau, Ingo
kaust.grant.numberBAS/1/1323-01-01
dc.date.accepted2020-06-08
refterms.dateFOA2020-08-13T13:11:24Z


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