The Role of Surface Defects in the Adsorption of Methanol on Fe3O4(001)

Gamba, Oscar; Hulva, Jan; Pavelec, Jiří; Bliem, Roland; Schmid, Michael; Diebold, Ulrike; Parkinson, Gareth S.

doi:10.1007/s11244-016-0713-9

Datensatz Zitierlink:

https://resolver.obvsg.at/urn:nbn:at:at-ubtuw:3-2847
http://hdl.handle.net/20.500.12708/337

Titel:

The Role of Surface Defects in the Adsorption of Methanol on Fe3O4(001)

Zitat:

Gamba, O., Hulva, J., Pavelec, J., Bliem, R., Schmid, M., Diebold, U., & Parkinson, G. S. (2017). The Role of Surface Defects in the Adsorption of Methanol on Fe3O4(001). Topics in Catalysis, 60, 420–430. https://doi.org/10.1007/s11244-016-0713-9

Verlags-DOI:

10.1007/s11244-016-0713-9

CatalogPlus:

AC11361246

Publikationstyp:

Artikel - Forschungsartikel

Sprache:

Englisch

Autor_innen:

Gamba, Oscar
Hulva, Jan
Pavelec, Jiří
Bliem, Roland
Schmid, Michael
Diebold, Ulrike
Parkinson, Gareth S.

Organisationseinheit:

E134 - Institut für Angewandte Physik

Zeitschrift:

Topics in Catalysis

ISSN:

1022-5528

Datum (veröffentlicht):

2017

Umfang:

Verlag:

SPRINGER/PLENUM PUBLISHERS

Peer Reviewed:

Keywords:

Oxide surfaces; Surface defects; Methanol; Magnetite; Surface chemistry

Abstract:

The adsorption of methanol (CH3OH) at the Fe3O4(001)−(√2 × √2)R45° surface was studied using X-ray photoelectron spectroscopy, scanning tunneling microscopy, and temperature-programmed desorption (TPD). CH3OH adsorbs exclusively at surface defect sites at room temperature to form hydroxyl groups and methoxy (CH3O) species. Active sites are identified as step edges, iron adatoms, antiphase domain boundaries in the (√2 × √2)R45° reconstruction, and above Fe atoms incorporated in the subsurface. In TPD, recombinative desorption is observed around 300 K, and a disproportionation reaction to form methanol and formaldehyde occurs at 470 K.

Lizenz:

CC BY 4.0