Microcalorimetric Study of the Absorption of Hydrogen by Palladium Powders and Carbon-Supported Palladium Particles

R. W. Wunder, J. W. Cobes, J. Phillips, Ljubisa R. Radovic, A. J.Lopez Peinado, F. Carrasco-Marin

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The adsorption and absorption of hydrogen on and in various forms of supported and unsupported palladium were studied using heat-flow calorimetry. The supports were found to have a tremendous effect on the nature of the hydrogen-palladium system. For palladium supported on silica or alumina, irreversible chemisorption was found to take place and be followed by bulk hydride formation. In contrast, it was found for carbon-supported particles that chemisorption does not take place and that the observed behavior could be explained by a model using only bulk hydride formation. It was further found that the heat of formation and equilibrium for β-hydride formation are functions of particle size. It was not clear if surface adsorption takes place on unsupported palladium.

Original languageEnglish (US)
Pages (from-to)984-992
Number of pages9
JournalLangmuir
Volume9
Issue number4
DOIs
StatePublished - Jan 1 1993

Fingerprint

Palladium
Powders
palladium
Hydrogen
Carbon
Hydrides
hydrides
carbon
hydrogen
Chemisorption
chemisorption
Adsorption
adsorption
Aluminum Oxide
heat of formation
Calorimetry
heat transmission
Silicon Dioxide
Alumina
heat measurement

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Wunder, R. W. ; Cobes, J. W. ; Phillips, J. ; Radovic, Ljubisa R. ; Peinado, A. J.Lopez ; Carrasco-Marin, F. / Microcalorimetric Study of the Absorption of Hydrogen by Palladium Powders and Carbon-Supported Palladium Particles. In: Langmuir. 1993 ; Vol. 9, No. 4. pp. 984-992.
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Microcalorimetric Study of the Absorption of Hydrogen by Palladium Powders and Carbon-Supported Palladium Particles. / Wunder, R. W.; Cobes, J. W.; Phillips, J.; Radovic, Ljubisa R.; Peinado, A. J.Lopez; Carrasco-Marin, F.

In: Langmuir, Vol. 9, No. 4, 01.01.1993, p. 984-992.

Research output: Contribution to journalArticle

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