Carbon Monoxide Chemisorption and Disproportionation on Thin Palladium Layers, Supported by Niobium and Niobium Pentoxide

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Title:Carbon Monoxide Chemisorption and Disproportionation on Thin Palladium Layers, Supported by Niobium and Niobium Pentoxide
Creators:
Plšek, Jan
Nikolajenko, Vladimír
Thiam, Michel Malick
Knor, Zlatko
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 68, 10, pp. 1833-1847
Uncontrolled Keywords:Morphology of vacuum deposited layers, Thermally programmed desorption, Metallic supports, Early transition metals, Late transition metals, Disproporcionation, Oxidic supports, Adsorption, Energy dissipation, Carbon monoxide

Abstract

Thermally programmed desorption technique has been applied to the investigation of "virgin" and repeated adsorption of carbon monoxide on Pd/Nb and Pd/Nb<sub>2</sub>O<sub>5</sub>/Nb systems. The desorbed products of the CO interaction with these surfaces, CO and CO<sub>2</sub>, were monitored with a quadrupole mass spectrometer. On the basis of presented results some of the observed differences between the metal- and oxide-supported active metal (Pd) have been ascribed to the morphological rather than to chemical (electronic) effects in these systems. The different excess kinetic energy dissipation of Pd atoms colliding with metallic or oxidic surface is considered to influence the initial growth of the Pd layer, resulting afterwards in a different morphology of the final Pd layers. <p>

Title:Carbon Monoxide Chemisorption and Disproportionation on Thin Palladium Layers, Supported by Niobium and Niobium Pentoxide
Creators:
Plšek, Jan
Nikolajenko, Vladimír
Thiam, Michel Malick
Knor, Zlatko
Uncontrolled Keywords:Morphology of vacuum deposited layers, Thermally programmed desorption, Metallic supports, Early transition metals, Late transition metals, Disproporcionation, Oxidic supports, Adsorption, Energy dissipation, Carbon monoxide
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:68
Number:10
Page Range:pp. 1833-1847
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20031833UNSPECIFIED
ID Code:2155
Item Type:Article
Deposited On:06 Feb 2009 17:16
Last Modified:06 Feb 2009 16:16

Citation

Plšek, Jan; Nikolajenko, Vladimír; Thiam, Michel Malick; Knor, Zlatko (2003) Carbon Monoxide Chemisorption and Disproportionation on Thin Palladium Layers, Supported by Niobium and Niobium Pentoxide. Collection of Czechoslovak Chemical Communications, 68 (10). pp. 1833-1847. ISSN 0010-0765

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