Journal article

Publication year: 1996

Pages: 3371-3374

Journal: Physical Review Letters

Volume number: 77

Issue number: 16

ISSN: 0031-9007

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

Publisher: 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 Citation style: 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 Citation style: 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