Surface Interactions in Pd-Nb System and Their Relation to Basic Questions and Practical Catalysis

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Title:Surface Interactions in Pd-Nb System and Their Relation to Basic Questions and Practical Catalysis
Creators:
Jirsak, Tomas
Nikolajenko, Vladimír
Knor, Zlatko
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 62, 4, pp. 575-580
Uncontrolled Keywords:Supported catalysts, Carbon monoxide chemisorption, Pd/Nb, Thermal desorption spectroscopy, Pd/NbO<i><sub>x</sub></i>/Nb

Abstract

Room temperature adsorption-desorption properties of Pd overlayers of various thicknesses were studied by thermal desorption spectroscopy of carbon monoxide. Pd overlayers were deposited on clean and oxidized Nb foil (NbO<i><sub>x</sub></i>/Nb). Adsorption properties of Pd overlayers deposited on clean Nb at temperature 350-400 K were not influenced by annealing in the temperature range 400 K to 600 K. Annealing above this temperature caused the decrease in the area of the Pd surface. It became probably smoother, exhibiting lower number of adsorption sites for CO. Non-annealed Pd overlayers deposited on the oxide carrier (NbO<i><sub>x</sub></i>/Nb) at temperatures between 350 and 400 K possessed the same adsorption capability as Pd deposited directly on Nb. Pd atoms thus neither massively penetrated into the oxide layer nor were encapsulated by NbO<i><sub>x</sub></i>.

Title:Surface Interactions in Pd-Nb System and Their Relation to Basic Questions and Practical Catalysis
Creators:
Jirsak, Tomas
Nikolajenko, Vladimír
Knor, Zlatko
Uncontrolled Keywords:Supported catalysts, Carbon monoxide chemisorption, Pd/Nb, Thermal desorption spectroscopy, Pd/NbO<i><sub>x</sub></i>/Nb
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:62
Number:4
Page Range:pp. 575-580
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19970575UNSPECIFIED
ID Code:1140
Item Type:Article
Deposited On:06 Feb 2009 17:07
Last Modified:06 Feb 2009 16:07

Citation

Jirsak, Tomas; Nikolajenko, Vladimír; Knor, Zlatko (1997) Surface Interactions in Pd-Nb System and Their Relation to Basic Questions and Practical Catalysis. Collection of Czechoslovak Chemical Communications, 62 (4). pp. 575-580. ISSN 0010-0765

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