Pregled bibliografske jedinice broj: 633426
Combining QEXAFS and Total Electron-Yield Detection for Temperature-Programmed In-Situ Studies: Fe K-edge Investigations of Au/Fe3O4- Catalysts
Combining QEXAFS and Total Electron-Yield Detection for Temperature-Programmed In-Situ Studies: Fe K-edge Investigations of Au/Fe3O4- Catalysts, 1999. (izvještaj).
CROSBI ID: 633426 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Combining QEXAFS and Total Electron-Yield Detection for Temperature-Programmed In-Situ Studies: Fe K-edge Investigations of Au/Fe3O4- Catalysts
Autori
Schroeder, Sven L.M. ; Weiher, Norbert ; Šmit, Goran
Izvornik
Hasylab Annual Report (Part I), Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESY
Vrsta, podvrsta
Ostale vrste radova, izvještaj
Godina
1999
Ključne riječi
Gold catalysts; magnetite; maghemite; haematite; QEXAFS; TEY
Sažetak
Combination of QEXAFS with Total Electron-Yield Detection was used to investigate phase transformation of magnetite, used as a gold support in CO oxidation, during calcination in a stream of 20% O2 / 80% He at 1 atm. Clear indications for the phase transformation to haematite were visible at temperatures above 750 K. Evidence for magnetite transformation to maghemite, at temperatures between 500 K and 750 K, was confirmed by EXAFS data.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
