| Literature DB >> 22354354 |
Tulio C R Rocha1, Andreas Oestereich, Demid V Demidov, Michael Hävecker, Spiros Zafeiratos, Gisela Weinberg, Valerii I Bukhtiyarov, Axel Knop-Gericke, Robert Schlögl.
Abstract
We addressed the interaction of oxygen with silver by synchrotron based near ambient pressure X-ray photoelectron spectroscopy at temperatures relevant for industrial oxidation reactions performed with silver catalysts. For silver single crystals, polycrystalline foils and powders in equilibrium with gas phase O(2), we observed the dynamics of the formation of five different atomic oxygen species with relative abundances depending on the temperature and time. Correlation of their formation kinetics with spectroscopic features and thermal stability indicates that these are distinct species with different electronic structures, which might relate to the different roles of silver in oxidation reactions.Entities:
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Year: 2012 PMID： 22354354 DOI： 10.1039/c2cp22472k
Source DB: PubMed Journal: Phys Chem Chem Phys ISSN： 1463-9076 Impact factor: 3.676