Journalartikel

Jahr der Veröffentlichung: 1996

Seiten: 3371-3374

Zeitschrift: Physical Review Letters

Bandnummer: 77

Heftnummer: 16

ISSN: 0031-9007

DOI Link: https://doi.org/10.1103/PhysRevLett.77.3371

Verlag: American Physical Society

Abstract: 
The formation of chemisorbed O phases on Ru(0001) by exposure to O2 at low pressures is apparently limited to coverages Θ≤0.5. Using low-energy electron diffraction and density-functional theory we show that this restriction is caused by kinetic hindering and that a dense O overlayer (Θ=1) can be formed with a (1×1) periodicity. The structural and energetic properties of this new adsorbate phase are analyzed and discussed in view of attempts to bridge the so-called “pressure gap” in heterogeneous catalysis. It is argued that the identified system actuates the unusually high rate of oxidizing reactions at Ru surfaces under high oxygen pressure conditions.

Harvard-Zitierstil: Stampfl, C., Schwegmann, S., Over, H., Scheffler, M. and Ertl, G. (1996) Structure and Stability of a High-Coverage (1 x 1) Oxygen Phase on Ru(0001), Physical Review Letters, 77(16), pp. 3371-3374. https://doi.org/10.1103/PhysRevLett.77.3371

APA-Zitierstil: Stampfl, C., Schwegmann, S., Over, H., Scheffler, M., & Ertl, G. (1996). Structure and Stability of a High-Coverage (1 x 1) Oxygen Phase on Ru(0001). Physical Review Letters. 77(16), 3371-3374. https://doi.org/10.1103/PhysRevLett.77.3371