Ir al contenido (pulsa Retorno)

Universitat Politècnica de Catalunya

    • Català
    • Castellano
    • English
    • LoginRegisterLog in (no UPC users)
  • mailContact Us
  • world English 
    • Català
    • Castellano
    • English
  • userLogin   
      LoginRegisterLog in (no UPC users)

UPCommons. Global access to UPC knowledge

Banner header
61.690 UPC E-Prints
You are here:
View Item 
  •   DSpace Home
  • E-prints
  • Grups de recerca
  • NEMEN - Nanoenginyeria de materials aplicats a l'energia
  • Articles de revista
  • View Item
  •   DSpace Home
  • E-prints
  • Grups de recerca
  • NEMEN - Nanoenginyeria de materials aplicats a l'energia
  • Articles de revista
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Cu supported on mesoporous ceria: water gas shift activity at low Cu loadings through metal-support interactions

Thumbnail
View/Open
Cusupported.pdf (1,574Mb)
 
10.1039/c7cp02378b
 
  View Usage Statistics
  LA Referencia / Recolecta stats
Cita com:
hdl:2117/108133

Show full item record
Vovchock, Dimitriy
Guild, Curtis J.
Llorca Piqué, JordiMés informacióMés informacióMés informació
Xu, Wenqian
Jafari, Tahereh
Toloueinia, Panteha
Kriz, David A.
Palomino, Robert M.
Waluyo, Iradwikanari
Rodriguez, Jose A.
Suib, Steven L.
Senanayake, S. D.
Document typeArticle
Defense date2017-06-20
Rights accessOpen Access
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
Abstract
We 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.
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. 
URIhttp://hdl.handle.net/2117/108133
DOI10.1039/c7cp02378b
ISSN1463-9076
Publisher versionhttp://pubs.rsc.org/en/Content/ArticleLanding/2017/CP/C7CP02378B#!divAbstract
Collections
  • NEMEN - Nanoenginyeria de materials aplicats a l'energia - Articles de revista [244]
  • Departament d'Enginyeria Química - Articles de revista [2.117]
  View Usage Statistics

Show full item record

FilesDescriptionSizeFormatView
Cusupported.pdf1,574MbPDFView/Open

Browse

This CollectionBy Issue DateAuthorsOther contributionsTitlesSubjectsThis repositoryCommunities & CollectionsBy Issue DateAuthorsOther contributionsTitlesSubjects

© UPC Obrir en finestra nova . Servei de Biblioteques, Publicacions i Arxius

info.biblioteques@upc.edu

  • About This Repository
  • Contact Us
  • Send Feedback
  • Privacy Settings
  • Inici de la pàgina