Articolo in rivista, 2012, ENG, 10.1126/science.1222887
Cargnello, M.; Delgado Jaen, J. J.; Hernandez Garrido, J. C.; Bakhmutsky, K.; Montini, T.; Calvino Gamez, J. J.; Gorte, R. J.; Fornasiero, P.
University of Pennsylvania; Consiglio Nazionale delle Ricerche (CNR); Universidad de Cadiz
There is a critical need for improved methane-oxidation catalysts to both reduce emissions of methane, a greenhouse gas, and improve the performance of gas turbines. However, materials that are currently available either have low activity below 400 degrees C or are unstable at higher temperatures. Here, we describe a supramolecular approach in which single units composed of a palladium (Pd) core and a ceria (CeO2) shell are preorganized in solution and then homogeneously deposited onto a modified hydrophobic alumina. Electron microscopy and other structural methods revealed that the Pd cores remained isolated even after heating the catalyst to 850 degrees C. Enhanced metal-support interactions led to exceptionally high methane oxidation, with complete conversion below 400 degrees C and outstanding thermal stability under demanding conditions.
Science (N. Y., N.Y.) 337 (6095), pp. 713–717
Methane Combustion, core-shell catalyst, ceria, palladium based catalyst
ID: 304062
Year: 2012
Type: Articolo in rivista
Creation: 2015-02-11 10:16:09.000
Last update: 2015-02-11 10:16:09.000
CNR authors
CNR institutes
External links
OAI-PMH: Dublin Core
OAI-PMH: Mods
OAI-PMH: RDF
URL: http://www.sciencemag.org/content/337/6095/713.abstract
External IDs
CNR OAI-PMH: oai:it.cnr:prodotti:304062
DOI: 10.1126/science.1222887
ISI Web of Science (WOS): 000307354500049