Hydrogen oxidation on stepped Rh surfaces: µm-scale versus nanoscale

Datler, Martin; Bespalov, Ivan; Buhr, Sebastian; Zeininger, Johannes; Stöger-Pollach, Michael; Bernardi, Johannes; Rupprechter, Günther; Suchorski, Yuri

doi:10.1007/s10562-016-1824-4

Record link:

https://resolver.obvsg.at/urn:nbn:at:at-ubtuw:3-2589
http://hdl.handle.net/20.500.12708/210

Title:

Hydrogen oxidation on stepped Rh surfaces: µm-scale versus nanoscale

Citation:

Datler, M., Bespalov, I., Buhr, S., Zeininger, J., Stöger-Pollach, M., Bernardi, J., Rupprechter, G., & Suchorski, Y. (2016). Hydrogen oxidation on stepped Rh surfaces: µm-scale versus nanoscale. Catalysis Letters. https://doi.org/10.1007/s10562-016-1824-4

Publisher DOI:

10.1007/s10562-016-1824-4

CatalogPlus:

AC11360822

Publication Type:

Article - Original Research Article

Language:

English

Authors:

Datler, Martin
Bespalov, Ivan
Buhr, Sebastian
Zeininger, Johannes
Stöger-Pollach, Michael
Bernardi, Johannes
Rupprechter, Günther
Suchorski, Yuri

Organisational Unit:

E165 - Institut für Materialchemie

Journal:

Catalysis Letters

ISSN:

1011-372X

Date (published):

Oct-2016

Number of Pages:

Publisher:

Springer

Peer reviewed:

Yes

Keywords:

Hydrogen oxidation; Photoemission electron microscopy; Field emission microscopy; Rhodium

Abstract:

The catalytic H2 oxidation reaction on stepped Rh surfaces in the 10−6 mbar pressure range was studied in situ on individual high-Miller-index domains of a polycrystalline Rh foil by PEEM (photoemission electron microscopy) and on a Rh nanotip by FIM/FEM (field-ion/field-emission microscopy). The activity, particularly the tolerance to poisoning by oxygen, was found to strongly depend on the density of steps and defects, as well as on the size of the catalytically active surfaces.

License:

CC BY 4.0