Effect of Au addition on hydrogen permeation and the resistance to H2S on Pd-Ag alloy membranes

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dc.contributor.authorMelendez, Jon
dc.contributor.authorde Nooijer, Niek
dc.contributor.authorCoenen, Kai
dc.contributor.authorFernandez, Ekain
dc.contributor.authorViviente, Jose Luis
dc.contributor.authorvan Sint Annaland, Martin
dc.contributor.authorArias, P. L.
dc.contributor.authorTanaka, D. A.Pacheco
dc.contributor.authorGallucci, Fausto
dc.contributor.institutionTecnalia Research & Innovation
dc.contributor.institutionTECNOLOGÍAS DE HIDRÓGENO
dc.contributor.institutionTECNOLOGÍA DE MEMBRANAS E INTENSIFICACIÓN DE PROCESOS
dc.date.accessioned2024-07-24T12:02:26Z
dc.date.available2024-07-24T12:02:26Z
dc.date.issued2017
dc.descriptionPublisher Copyright: © 2017 Elsevier B.V.
dc.description.abstractIn order to make a detailed comparison between Pd-Ag and Pd-Ag-Au membranes according to their H2 permeation properties and sulfide resistance Au was deposited by the electroless plating (ELP) technique onto one half of Pd-Ag membranes. Membranes' thicknesses are ranged between 2.45 and 3.13 µm. Permeation tests have been carried out from 400 to 600 °C under single gas conditions. The Pd91.7Ag4.8Au3.5 membrane has shown a H2 permeance of 4.71·10−3 mol s−1 m−2 Pa0.5 at 600 °C, which is one of the highest values ever reported in the literature, where the Pd-Ag-Au membranes have exhibited higher hydrogen permeation rates compared to their respective Pd-Ag membranes above 550 °C. The H2 permeation properties have been determined in terms of the degree of H2S inhibition, up to 17 ppm, and subsequent H2 flux recovery rate. Pd-Ag membranes alloyed with gold resisted 12.5 h of H2S exposure showing recovery rates of 85% and 83% for Pd91.5Ag4.7Au3.8 and Pd90.5Ag4.6Au4.9 membranes, respectively, whereas the hydrogen flux of non-gold membranes decreased below detectable values. H2/N2 ideal perm-selectivity of the Pd-Ag membrane was reduced to 18 after H2S tests (starting from > 1308) while Pd-Ag-Au membranes showed a better resistance to sulfur with H2/N2 selectivity values of 793 and 121 (starting from > 4115 and > 2557 respectively). No evidence of the formation of a crystalline sulfide phase on the Pd-Ag-Au alloy membrane surfaces was found in the XRD patterns after H2S exposure and also XPS characterization did not show important changes in the composition before and after the H2S exposure tests. However, SEM images showed a decrease in the thickness of the Pd-Ag membrane and signs of corrosion and roughening on its surface, while gold-alloyed membranes did not show any damage.en
dc.description.statusPeer reviewed
dc.format.extent13
dc.identifier.citationMelendez , J , de Nooijer , N , Coenen , K , Fernandez , E , Viviente , J L , van Sint Annaland , M , Arias , P L , Tanaka , D A P & Gallucci , F 2017 , ' Effect of Au addition on hydrogen permeation and the resistance to H 2 S on Pd-Ag alloy membranes ' , Journal of Membrane Science , vol. 542 , pp. 329-341 . https://doi.org/10.1016/j.memsci.2017.08.029
dc.identifier.doi10.1016/j.memsci.2017.08.029
dc.identifier.issn0376-7388
dc.identifier.urihttps://hdl.handle.net/11556/3242
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85027554553&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofJournal of Membrane Science
dc.relation.projectIDSeventh Framework Programme, FP7, 671459-621181
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsElectroless plating
dc.subject.keywordsH permeation
dc.subject.keywordsH recovery
dc.subject.keywordsHS poisoning
dc.subject.keywordsPalladium-silver-gold membrane
dc.subject.keywordsBiochemistry
dc.subject.keywordsGeneral Materials Science
dc.subject.keywordsPhysical and Theoretical Chemistry
dc.subject.keywordsFiltration and Separation
dc.titleEffect of Au addition on hydrogen permeation and the resistance to H2S on Pd-Ag alloy membranesen
dc.typejournal article
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