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dc.contributor.authorGenduso, Giuseppe
dc.contributor.authorLitwiller, Eric
dc.contributor.authorMa, Xiaohua
dc.contributor.authorZampini, Stefano
dc.contributor.authorPinnau, Ingo
dc.date.accessioned2019-02-10T08:13:40Z
dc.date.available2019-02-10T08:13:40Z
dc.date.issued2019-01-29
dc.identifier.citationGenduso G, Litwiller E, Ma X, Zampini S, Pinnau I (2019) Mixed-gas sorption in polymers via a new barometric test system: sorption and diffusion of CO2-CH4 mixtures in polydimethylsiloxane (PDMS). Journal of Membrane Science. Available: http://dx.doi.org/10.1016/j.memsci.2019.01.046.
dc.identifier.issn0376-7388
dc.identifier.doi10.1016/j.memsci.2019.01.046
dc.identifier.urihttp://hdl.handle.net/10754/631006
dc.description.abstractMixed-gas sorption of CO2-CH4 mixtures in rubbery polydimethylsiloxane (PDMS) at 35 °C demonstrated that the presence of CH4 changed the behavior of CO2 sorption and vice versa. This mutual interaction indicated that gases in mixtures do not sorb independently in rubbery membranes. Moreover, we observed that at increasing pressures the interaction between PDMS and CO2-CH4 mixtures enhanced the solubility selectivity of PDMS. Mixed-gas solubility coefficients of CH4 in PDMS were lower than 0.5 cm3(STP) cm−3 atm−1. To accurately measure these values, a new sorption system was designed, constructed, and optimized for low solubility coefficients; an operator-friendly approach to mixed-gas sorption experiments is also discussed in this work. CO2-CH4 mixed-gas diffusivity trends were evaluated from Maxwell-Stefan model fitting of mixed-gas permeation and sorption data. The analysis of both mixed-gas diffusion and sorption data demonstrated that CO2/CH4 mixed-gas permselectivity of PDMS was mainly influenced by CO2 sorption. In mixtures, CH4 diffusion coefficients increased with higher volumetric CO2 concentration, whereas CO2 diffusion coefficients were essentially concentration independent in both pure- and mixed-gas environments.
dc.description.sponsorshipThis work was supported by funding (BAS/1/1323-01-01) from King Abdullah University of Science and Technology (KAUST).
dc.publisherElsevier BV
dc.relation.urlhttps://www.sciencedirect.com/science/article/pii/S0376738818325067?via%3Dihub
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, [, , (2019-01-29)] DOI: 10.1016/j.memsci.2019.01.046 . © 2019. 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.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleMixed-gas sorption in polymers via a new barometric test system: sorption and diffusion of CO2-CH4 mixtures in polydimethylsiloxane (PDMS)
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentExtreme Computing Research Center
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Membrane Science
dc.eprint.versionPost-print
kaust.personGenduso, Giuseppe
kaust.personLitwiller, Eric
kaust.personMa, Xiaohua
kaust.personZampini, Stefano
kaust.personPinnau, Ingo
kaust.grant.numberBAS/1/1323-01-01
refterms.dateFOA2021-01-28T00:00:00Z
dc.date.published-online2019-01-29
dc.date.published-print2019-05


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NOTICE: 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, [, , (2019-01-29)] DOI: 10.1016/j.memsci.2019.01.046 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Except where otherwise noted, this item's license is described as NOTICE: 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, [, , (2019-01-29)] DOI: 10.1016/j.memsci.2019.01.046 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/