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  Interaction of NO with the O-rich RuO2(110) surface at 300 K

Jacobi, K., & Wang, Y. (2009). Interaction of NO with the O-rich RuO2(110) surface at 300 K. Surface Science, 603(10-12), 1600-1604. doi:10.1016/j.susc.2008.09.047.

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 Creators:
Jacobi, Karl1, Author           
Wang, Yuemin1, Author           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              

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Free keywords: High-resolution electron energy-loss spectroscopy (HREELS); Thermal desorption spectroscopy; Chemisorption; Surface chemical reaction; Ruthenium oxide; Oxygen; Nitrogen oxides
 Abstract: The interaction of NO with the O-rich RuO2(1 1 0) surface, exposing coordinatively unsaturated O-bridge, O-cus, and Ru-cus atoms, was studied at 300 K by thermal desorption spectroscopy (TDS) and high-resolution electron energy-loss spectroscopy (HREELS). The conclusions are validated by isotope substitution experiments with 18O. During exposure to NO an O···N–O surface group (NO2-cus) is formed with O-cus. Additionally, a smaller number of empty Ru-cus sites are filled by NO-cus. If one warms the sample to 400 K, NO2-cus does not desorb but decomposes into O and NO again, the latter being either released into gas phase or adsorbed as NO-cus. With O-bridge such a surface group is not stable at 300 K. Our experiments further prove that O-cus is more reactive than O-bridge.

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Language(s): eng - English
 Dates: 2009-06-01
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 429892
DOI: 10.1016/j.susc.2008.09.047
 Degree: -

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Title: Surface Science
  Alternative Title : Surf. Sci.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 603 (10-12) Sequence Number: - Start / End Page: 1600 - 1604 Identifier: -