Alloy Catalyst in a Reactive Environment: The Example of Ag-Cu Particles for Ethylene Epoxidation Full article
Journal |
Physical Review Letters
ISSN: 0031-9007 , E-ISSN: 1079-7114 |
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Output data | Year: 2010, Volume: 104, Number: 3, Pages: 035503 Pages count : 4 DOI: 10.1103/PhysRevLett.104.035503 | ||||||||||
Tags | SURFACE-SCIENCE; PHOTOELECTRON-SPECTROSCOPY; SELECTIVITY; 1ST-PRINCIPLES; COPPER; SILVER | ||||||||||
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Abstract:
Combining first-principles calculations and in situ photoelectron spectroscopy, we show how the composition and structure of the surface of an alloy catalyst is affected by the temperature and pressure of the reagents. The Ag-Cu alloy, recently proposed as an improved catalyst for ethylene epoxidation, forms a thin Cu-O surface oxide, while a Ag-Cu surface alloy is found not to be stable. Several possible surface structures are identified, among which the catalyst surface is likely to dynamically evolve under reaction conditions.
Cite:
Piccinin S.
, Zafeiratos S.
, Stampfl C.
, Hansen T.W.
, Hävecker M.
, Teschner D.
, Bukhtiyarov V.I.
, Girgsdies F.
, Knop-Gericke A.
, Schlögl R.
, Scheffler M.
Alloy Catalyst in a Reactive Environment: The Example of Ag-Cu Particles for Ethylene Epoxidation
Physical Review Letters. 2010. V.104. N3. P.035503. DOI: 10.1103/PhysRevLett.104.035503 WOS Scopus РИНЦ
Alloy Catalyst in a Reactive Environment: The Example of Ag-Cu Particles for Ethylene Epoxidation
Physical Review Letters. 2010. V.104. N3. P.035503. DOI: 10.1103/PhysRevLett.104.035503 WOS Scopus РИНЦ
Files:
Full text from publisher
Dates:
Submitted: | Nov 3, 2009 |
Published print: | Jan 1, 2010 |
Published online: | Jan 22, 2010 |
Identifiers:
Web of science | WOS:000274003100024 |
Scopus | 2-s2.0-75149156519 |
Elibrary | 15323913 |
Chemical Abstracts | 2010:132750 |
Chemical Abstracts (print) | 152:384108 |
OpenAlex | W2027952879 |