CINECA IRIS Institutional Research Information System
IRIS è l'Anagrafe della ricerca dell'Università degli Studi di Trento, e ha lo scopo di raccogliere, documentare, conservare e diffondere, anche ad accesso aperto, la produzione scientifica degli autori afferenti all'Università degli Studi di Trento.
EnglishThe gold−zirconia yolk−shell system is an interesting catalyst for CO oxidation. The size distribution of the gold nanoparticles is very narrow, and they are well separated from each other also after treatment at high temperature, which is due to their encapsulation in crystalline zirconia hollow spheres. Because this allows thermal and chemical treatment without affecting the size distribution, different defect structures of the gold nanoparticles can be induced, and the effect on catalytic activity can be investigated. Line profile analysis of the powder diffraction data based on the whole powder pattern modeling approach was used to determine the domain size distribution and lattice defects present in this two-phase system. The influence of different diffractometer setups on the results of the line profile analysis was also investigated. Variation of the chemical and thermal treatment procedures allowed altering the microstructure of the system. The resulting catalysts showed substantial variation in the activity for CO oxidation. Lower dislocation densities and less stacking faults result in decreased catalytic activity. These contributions to activity could be studied without any superimposed size effect due to the constant gold particle sizes.
Scheda prodotto non validato
I dati visualizzati non sono stati ancora sottoposti a validazione formale da parte dello Staff di IRIS, ma sono stati ugualmente trasmessi al Sito Docente Cineca (Loginmiur).
| Titolo: | Influence of the Microstructure of Gold-Zirconia Yolk-Shell Catalysts on the CO Oxidation Activity | |
| Autori: | A., Dangwal Pandey; R., Güttel; Leoni, Matteo; F., Schüth; C., Weidenthaler | |
| Autori Unitn: | ||
| Titolo del periodico: | JOURNAL OF PHYSICAL CHEMISTRY. C | |
| Anno di pubblicazione: | 2010 | |
| Numero e parte del fascicolo: | 45 | |
| Codice identificativo Scopus: | 2-s2.0-78650346600 | |
| Codice identificativo ISI: | WOS:000284018100033 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1021/jp106436h | |
| Handle: | http://hdl.handle.net/11572/92976 | |
| Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |
File in questo prodotto:
http://hdl.handle.net/11572/92976
Copyright © 2021