The adsorption ofC0 and CO, on platinum. nickel and copper W;IS studied by X-ray and UV photoelectron spectroscopy. The results indicate that CO, is physisorbcd on p!atinum and copper and 1b:it the bonding: of CO on all tbrce metals involves the metal d-electrons and particularly the 5a lcvcl of CO.
Composition and properties of the adsorption products of CO and CO2 on platinized platinum
β Scribed by V.E. Kazarinov; V.N. Andreev; A.V. Shlepakov
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 944 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0013-4686
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β¦ Synopsis
Abtract-With the use of a complex method combining the radiotracer technique of "electrode immersion" and the pulse potentiodynamic method we have revealed and investigated a new property of chemisorbed species of the stoichiometric compositiop COH. This property consists in these species being adsorbed on platinum surface in two forms differing only in their electrooxidation potentials. The ratio of these two forms on the surface is determined solely by the total amount of chemisorbed product. This new property of the COH species does not depend on the nature of the one carbon organic substance, from whose solution these species were adsorbed (with the exception CO).
The stoichiometric composition of CO adsorption products has been determined and their properties have been examined in detail. On the basis of these data, the distinguishing features of CO adsorption products as opposed to the adsorption products of CHsOH. H&O, HCOOH, CO, have been formulated.
π SIMILAR VOLUMES
LJPS experiments have revealed that CO chemisorbs on polycrystalline gold at 77 K. The specific band structure of gold-deposited nlatinum and the adsorbed state of CO on it have also been investigated.
The influence of potassium, in the submonolayer regime, on the adsorption and coadsorption of CO2 and H on a stepped copper surface, Cu(115), has been studied by photoelectron spectroscopy, temperature-programmed desorption, and work-function measurements. Based on the fast recording of C 1s and O 1