Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/190671
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | In situ and theoretical studies for the dissociation of water on an active Ni/CeO2 Catalyst: Importance of strong metal-support interactions for the cleavage of O-H bonds |
Autor: | Carrasco Rodríguez, Javier; López-Durán, David CSIC ORCID; Liu, Z.; Duchon, Tomás; Evans, Jaime; Senanayake, Sanjaya D.; Crumlin, Ethan J.; Matolín, Vladimir; Rodríguez, José A.; Ganduglia-Pirovano, M. V. CSIC ORCID | Palabras clave: | Water dissociation Nickel Density functional calculations Ceria X‐ray photoelectron spectroscopy |
Fecha de publicación: | 23-mar-2015 | Editor: | John Wiley & Sons | Citación: | Angewandte Chemie International Edition 54(13): 3917-3921 (2015) | Resumen: | Water dissociation is crucial in many catalytic reactions on oxide‐supported transition‐metal catalysts. Supported by experimental and density‐functional theory results, the effect of the support on OH bond cleavage activity is elucidated for nickel/ceria systems. Ambient‐pressure O 1s photoemission spectra at low Ni loadings on CeO2(111) reveal a substantially larger amount of OH groups as compared to the bare support. Computed activation energy barriers for water dissociation show an enhanced reactivity of Ni adatoms on CeO2(111) compared with pyramidal Ni4 particles with one Ni atom not in contact with the support, and extended Ni(111) surfaces. At the origin of this support effect is the ability of ceria to stabilize oxidized Ni2+ species by accommodating electrons in localized f‐states. The fast dissociation of water on Ni/CeO2 has a dramatic effect on the activity and stability of this system as a catalyst for the water‐gas shift and ethanol steam reforming reactions. | Versión del editor: | https://doi.org/10.1002/anie.201410697 | URI: | http://hdl.handle.net/10261/190671 | DOI: | 10.1002/anie.201410697 | ISSN: | 1433-7851 | E-ISSN: | 1521-3773 |
Aparece en las colecciones: | (ICP) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
203
checked on 24-abr-2024
WEB OF SCIENCETM
Citations
191
checked on 22-feb-2024
Page view(s)
192
checked on 26-abr-2024
Download(s)
26
checked on 26-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.