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dc.contributor.authorBrencio, C.
dc.contributor.authorFontein, F.W.A.
dc.contributor.authorMedrano, J.A.
dc.contributor.authorDi Felice, L.
dc.contributor.authorArratibel, A.
dc.contributor.authorGallucci, F.
dc.date.accessioned2021-11-04T11:58:31Z
dc.date.available2021-11-04T11:58:31Z
dc.date.issued2022-03
dc.identifier.citationBrencio, C., F.W.A. Fontein, J.A. Medrano, L. Di Felice, A. Arratibel, and F. Gallucci. “Pd-Based Membranes Performance Under Hydrocarbon Exposure for Propane Dehydrogenation Processes: Experimental and Modeling.” International Journal of Hydrogen Energy 47, no. 21 (March 2022): 11369–11384. doi:10.1016/j.ijhydene.2021.09.252.en
dc.identifier.issn0360-3199en
dc.identifier.urihttp://hdl.handle.net/11556/1220
dc.description.abstractIn this work, a novel Pd–Ag double-skinned (DS-) membrane is used for the first time in conditions typical of propane dehydrogenation (PDH). This membrane presents a protective layer on top of the H2-selective one, which acts as shield against chemical deactivation and mechanical erosion under reaction conditions. While the protective layer is already been proven as an efficient barrier against membrane erosion in fluidized beds, there is no validation yet under PDH reaction. The DS- membrane performance is compared with a conventional (C-) Pd–Ag membrane under alkane/alkene exposure, at 400–500 °C and 3 bar, to investigate whether the incorporation of the protective layer would be suited for H2 separation in PDH systems, and if coking rate would be affected. The novel membrane shows a H2 permeance of 2.28 × 10−6 mol∙m−2 s−1∙Pa−1 at 500 ᵒC and 4 bar of pressure difference, overcoming the performance of the conventional PdAg one (1.56x∙10−6 mol m−2 s−1∙Pa−1). Both membranes present a stable H2 flux under alkane exposure, while deactivation occurs under exposure to alkenes. A model able to describe the H2 flux through Pd-based membranes is presented to fit the experimental data and predict membrane performance. The model includes mass transfer limitations in the retentate and a corrective inhibition factor to account for the competitive adsorption of hydrocarbon species in the H2 selective layer. The experimental results obtained under alkene exposure deviates from model predictions; this can be attributed to carbon deposition on the surface of the selective layer, as further detected on the DS-membrane by Scanning Electron Microscopy (SEM)/Energy Dispersive X-Ray Analysis (EDX), which is the main factor for membrane deactivation.en
dc.description.sponsorshipEuropean Union´s Horizon 2020 research and innovation program under grant agreement No 814671 (BiZeolCat)en
dc.language.isoengen
dc.publisherElsevier Ltden
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titlePd-based membranes performance under hydrocarbon exposure for propane dehydrogenation processes: Experimental and modelingen
dc.typearticleen
dc.identifier.doi10.1016/j.ijhydene.2021.09.252en
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/814671/EU/Bifunctional Zeolite based Catalysts and Innovative process for Sustainable Hydrocarbon Transformation/BIZEOLCATen
dc.rights.accessRightsopenAccessen
dc.subject.keywordsMembranesen
dc.subject.keywordsMembrane reactoren
dc.subject.keywordsPropane dehydrogenationen
dc.subject.keywordsInhibitionen
dc.subject.keywordsModelingen
dc.journal.titleInternational Journal of Hydrogen Energyen
dc.page.final11384
dc.page.initial11369
dc.volume.number47


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    Attribution 4.0 InternationalExcept where otherwise noted, this item's license is described as Attribution 4.0 International