Show simple item record

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.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.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.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshCarbon monoxide
dc.subject.lcshExpansion (Heat)
dc.titleCu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions
dc.subject.lemacMonòxid de carboni
dc.contributor.groupUniversitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
local.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.
local.citation.publicationNamePhysical chemistry chemical physics

Files in this item


This item appears in the following Collection(s)

Show simple item record

All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder