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dc.contributor.authorVovchock, Dimitriy
dc.contributor.authorGuild, Curtis J.
dc.contributor.authorLlorca Piqué, Jordi
dc.contributor.authorXu, Wenqian
dc.contributor.authorJafari, Tahereh
dc.contributor.authorToloueinia, Panteha
dc.contributor.authorKriz, David A.
dc.contributor.authorPalomino, Robert M.
dc.contributor.authorWaluyo, Iradwikanari
dc.contributor.authorRodriguez, Jose A.
dc.contributor.authorSuib, Steven L.
dc.contributor.authorSenanayake, S. D.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2017-09-29T07:21:00Z
dc.date.available2018-07-21T00:30:19Z
dc.date.issued2017-06-20
dc.identifier.citationVovchock, D., Guild, C., Llorca, J., Xu, W., Jafari, T., Toloueinia, P., Kriz, D., Palomino, R., Waluyo, I., Rodriguez, J.A., Suib, S., Senanayake, S. Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions. "Physical chemistry chemical physics", 20 Juny 2017, vol. 19, p. 17708-17717.
dc.identifier.issn1463-9076
dc.identifier.urihttp://hdl.handle.net/2117/108133
dc.description.abstractWe have synthesized and tested a highly active Cu doped mesoporous CeO2 catalyst system for the low temperature water-gas shift (WGS) reaction. While typical oxide-supported copper WGS catalysts are characterized by high copper loadings (30-40%), the morphological properties of the mesoporous CeO2 material enable high catalytic activity at copper loadings as low as 1%. Operando X-ray diffraction, in situ X-ray absorption near-edge structure spectroscopy (XANES), and operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) methods were used to probe the interactions between the metal and mesoporous oxide components under reaction conditions. Copper was observed to undergo reduction from oxide to metal under WGS conditions at 150 °C, while the CeO2 lattice was observed to expand upon heating, indicating Ce3+ formation correlated with CO2 production. The active state of the catalysts was confirmed by in situ XANES to contain Cu0 and partially reduced CeO2. DRIFTS analysis revealed carboxyl species bound to copper during reduction, as well as formate and carbonate surface species on ceria. Lower concentrations of copper were observed to foster enhanced metal-support interactions.
dc.format.extent10 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshCarbon monoxide
dc.subject.lcshExpansion (Heat)
dc.subject.lcshOxides
dc.subject.lcshCatalysts
dc.titleCu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions
dc.typeArticle
dc.subject.lemacMonòxid de carboni
dc.subject.lemacCatalitzadors
dc.subject.lemacÒxids
dc.contributor.groupUniversitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia
dc.identifier.doi10.1039/c7cp02378b
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://pubs.rsc.org/en/Content/ArticleLanding/2017/CP/C7CP02378B#!divAbstract
dc.rights.accessOpen Access
drac.iddocument21546555
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorVovchock, D., Guild, C., Llorca, J., Xu, W., Jafari, T., Toloueinia, P., Kriz, D., Palomino, R., Waluyo, I., Rodriguez, J.A., Suib, S., Senanayake, S.
upcommons.citation.publishedtrue
upcommons.citation.publicationNamePhysical chemistry chemical physics
upcommons.citation.volume19
upcommons.citation.startingPage17708
upcommons.citation.endingPage17717


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