The Silver-Oxygen System in Catalysis: New Insights by Near Ambient Pressure X-Ray Photoelectron Spectroscopy Review
Journal |
PCCP: Physical Chemistry Chemical Physics
ISSN: 1463-9076 , E-ISSN: 1463-9084 |
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Output data | Year: 2012, Volume: 14, Number: 13, Pages: 4554-4564 Pages count : 11 DOI: 10.1039/C2CP22472K | ||||||
Tags | ELECTRONIC-STRUCTURE; ETHYLENE EPOXIDATION; SUBSURFACE OXYGEN; PARTIAL OXIDATION; HIGH-TEMPERATURE; ADSORPTION; SURFACE; Ag(111); XPS; MECHANISM | ||||||
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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 O2, 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.
Cite:
Rocha T.C.R.
, Oestereich A.
, Demidov D.V.
, Haevecker M.
, Zafeiratos S.
, Weinberg G.
, Bukhtiyarov V.I.
, Knop-Gericke A.
, Schlögl R.
The Silver-Oxygen System in Catalysis: New Insights by Near Ambient Pressure X-Ray Photoelectron Spectroscopy
PCCP: Physical Chemistry Chemical Physics. 2012. V.14. N13. P.4554-4564. DOI: 10.1039/C2CP22472K WOS Scopus РИНЦ
The Silver-Oxygen System in Catalysis: New Insights by Near Ambient Pressure X-Ray Photoelectron Spectroscopy
PCCP: Physical Chemistry Chemical Physics. 2012. V.14. N13. P.4554-4564. DOI: 10.1039/C2CP22472K WOS Scopus РИНЦ
Files:
Full text from publisher
Dates:
Submitted: | Feb 8, 2012 |
Accepted: | Feb 10, 2012 |
Published online: | Feb 22, 2012 |
Identifiers:
Web of science | WOS:000301235200029 |
Scopus | 2-s2.0-84858396159 |
Elibrary | 17980426 |
Chemical Abstracts | 2012:347266 |
Chemical Abstracts (print) | 156:372891 |
OpenAlex | W2166082785 |