Alloy Catalyst in a Reactive Environment: The Example of Ag-Cu Particles for Ethylene Epoxidation

Author(s): Simone Piccinin, Spiros Zafeiratos, Catherine Stampfl, Thomas W. Hansen, Michael Hävecker, Detre Teschner, Valerii I. Bukhtiyarov, Frank Girgsdies, Axel Knop-Gericke, Robert Schlögl, and Matthias Scheffler
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 epoxidat…

[Phys. Rev. Lett. 104, 035503] Published Fri Jan 22, 2010