INFLUENCE OF SURFACE STRUCTURE ON THE MECHANISM OF CO ADSORPTION AND CATALYTIC OXIDATION ON PALLADIUM

I. Stará and V. Matolín
Additional contact information
I. Stará: Department of Electronics and Vacuum Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
V. Matolín: Department of Electronics and Vacuum Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic

Surface Review and Letters (SRL), 1997, vol. 04, issue 06, 1353-1358

Abstract: The adsorption and oxidation of carbon monoxide on small alumina-supported Pd particles have been studied by temperature-programmed desorption (TPD) using molecular beam techniques. The results of size effect studies show clearly different surface properties of bulk metal and supported clusters. Surprising effect of particalCOdissociation was observed on small Pd particles deposited on γ-alumina, prepared by thermal oxidation of aluminum, and not on Pd/α-alumina model catalysts. The activation energy ofCOdesorption,Ed, was determined as a function of particle size. TheEddecreased with decreasing particle size. The CO and oxygen sticking probability measurements indicated theCOand oxygen diffusion over the support. It was shown that the oxygen adsorption capacity and the reactivity of alumina-supported catalysts were higher than those of Pd(111).

Date: 1997
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X97001802
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:04:y:1997:i:06:n:s0218625x97001802

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X97001802

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().