Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/19303
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Hydrogen capacity of palladium-loaded carbon materials.

AuthorsAnsón Casaos, Alejandro CSIC ORCID ; Lafuente, Esperanza; Urriolabeitia, Esteban P. CSIC ORCID; Navarro-Martín, Rafael CSIC; Benito, Ana M. CSIC ORCID ; Maser, Wolfgang K. CSIC ORCID ; Martínez Fernández de Landa, María Teresa
Issue Date11-Mar-2006
PublisherAmerican Chemical Society
CitationJournal of Physical Chemistry 110(13): 6643–6648 (2006)
AbstractSeveral 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.
Description6 pages, 7 figures, 2 tables.
Publisher version (URL)http://dx.doi.org/10.1021/jp057206c
URIhttp://hdl.handle.net/10261/19303
DOI10.1021/jp057206c
Appears in Collections:(ICMA) Artículos
(ICB) Artículos

Show full item record
Review this work

SCOPUSTM   
Citations

130
checked on May 18, 2022

WEB OF SCIENCETM
Citations

125
checked on May 20, 2022

Page view(s)

413
checked on May 21, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.