Reaction Mechanism of the Oxidation of HCl over RuO2(110)

• DOI: 10.1021/jp803346q
• Publication Date: 2008-06-13T06:00:45Z
• Authors: S. Zweidinger; D. Crihan; M. Knapp; J. P. Hofmann; A. P. Seitsonen; C. J. Weststrate; E. Lundgren; J. N. Andersen; H. Over
• Keywords: 01 natural sciences; 0104 chemical sciences

High-resolution core-level shift spectroscopy and temperature-programmed reaction experiments together with density functional theory calculations reveal that the oxidation of HCl with oxygen producing Cl2 and water proceeds on the chlorine-stabilized RuO2(110) surface via a one-dimensional Langmuir-Hinshelwood mechanism. The recombination of two adjacent chlorine atoms on the catalyst’s surface constitutes the rate-determining step in this novel Deacon-like process.