Por favor, use este identificador para citar o enlazar a este item:
Compartir / Impacto:
|Citado 109 veces en Web of Knowledge® | Ver citas en Google académico|
|Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL|
The hydrogen capacity of palladium loaded carbon materials.
|Autor:||Ansón Casaos, Alejandro; Lafuente, Esperanza; Urriolabeitia, Esteban P. ; Navarro, Rafael; Benito, Ana M.; Maser, Wolfgang K.; Martinez, M. Teresa|
|Fecha de publicación:||11-mar-2006|
|Editor:||American Chemical Society|
|Citación:||J. Phys. Chem. 110(13): 6643–6648 (2006)|
|Resumen:||Several samples of palladium-loaded single-wall carbon nanotubes and palladium-loaded MAXSORB activated carbon were prepared by means of the reaction of the raw carbon support with Pd2(dba)3·CHCl3. When carbon nanotubes were used as the support, the palladium content in the samples reached 13−31 wt % and fine particles of 5−7 nm average size were obtained. In the case of the samples with MAXSORB as the support, the palladium content was higher (30−50 wt %) and the particle size larger (32−42 nm) than in the nanotube samples. At 1 atm and room temperature, the hydrogen capacity of the palladium-loaded samples exceeds 0.1 wt % and is much higher than the capacity of the raw carbon supports (less than 0.01 wt %). The maximum hydrogen capacity at 1 atm and room temperature was found to be 0.5 wt %. A maximum hydrogen capacity of 0.7 wt % was obtained at 90 bar in a palladium-loaded MAXSORB sample, while the capacities for the raw carbon nanotubes and MAXSORB at the same pressure were 0.21 and 0.42 wt %, respectively. At low pressure, it was observed that the H/Pd atomic ratios in the palladium-loaded samples were always higher than in the bulk Pd. The spillover effect is considered as a possible cause of the high H/Pd atomic ratios. On the other hand, the effect of the pressure increase on the spillover was observed to be very low at high pressure and room temperature.|
|Descripción:||6 pages, 7 figures, 2 tables.|
|Versión del editor:||http://dx.doi.org/10.1021/jp057206c|
|Aparece en las colecciones:||(ICMA) Artículos|
Ficheros en este ítem:
No hay ficheros asociados a este ítem.