CINECA IRIS Institutional Research Information System
IRIS è la soluzione IT che facilita la raccolta e la gestione dei dati relativi alle attività e ai prodotti della ricerca. Fornisce a ricercatori, amministratori e valutatori gli strumenti per monitorare i risultati della ricerca, aumentarne la visibilità e allocare in modo efficace le risorse disponibili.
EnglishThe interaction of CO with molecularly and atomically bonded oxygen was investigated on Ag(001) by HREELS, dosing the reactants with a supersonic molecular beam, We rind that under our best clean working conditions and at a surface temperature of 100 K, CO removes chemisorbed dioxygen with a much lower reaction probability than for Ag(110). For dissociatively chemisorbed oxygen the removal rate was smaller than the experimental sensitivity both at 100 and 300 K. However, impurities strongly affect the reaction probability for CO oxidation by both O and O-2. The reaction mechanism is of the Langmuir-Hinshelwood type as proved by the temperature dependence. CO can be stabilized at the surface under special conditions for which no extra HREELS peaks are observed. CO removed then atomically adsorbed O above 160 K.
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
| Titolo: | HREELS study of CO oxidation on Ag(001) by O2 or O | |
| Autori: | ||
| Data di pubblicazione: | 1997 | |
| Rivista: | ||
| Abstract: | The interaction of CO with molecularly and atomically bonded oxygen was investigated on Ag(001) by HREELS, dosing the reactants with a supersonic molecular beam, We rind that under our best clean working conditions and at a surface temperature of 100 K, CO removes chemisorbed dioxygen with a much lower reaction probability than for Ag(110). For dissociatively chemisorbed oxygen the removal rate was smaller than the experimental sensitivity both at 100 and 300 K. However, impurities strongly affect the reaction probability for CO oxidation by both O and O-2. The reaction mechanism is of the Langmuir-Hinshelwood type as proved by the temperature dependence. CO can be stabilized at the surface under special conditions for which no extra HREELS peaks are observed. CO removed then atomically adsorbed O above 160 K. | |
| Handle: | http://hdl.handle.net/11567/194999 | |
| Appare nelle tipologie: | 01.01 - Articolo su rivista |
File in questo prodotto:
Copyright © 2022