Issue 23, 2011
From the journal:

Physical Chemistry Chemical Physics

Interactions of oxygen and ethylene with submonolayer Ag films supported on Ni(111)

Robert E. Rettew,a   Axel Meyer,b   Sanjaya D. Senanayake,c   Tsung-Liang Chen,d   Cole Petersburg,a   J. Ingo Flege,b   Jens Faltab  and  Faisal M. Alamgir*a  

* Corresponding authors

a School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
E-mail: faisal.alamgir@mse.gatech.edu
Fax: +1 404 894 9140
Tel: +1 404 385 3263

b Institute of Solid State Physics, The University of Bremen, Bremen, Germany

c The Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, USA

d Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

Abstract

We investigate the oxidation of, and the reaction of ethylene with, Ni(111) with and without sub-monolayer Ag adlayers as a function of temperature. The addition of Ag to Ni(111) is shown to enhance the activity towards the ethylene epoxidation reaction, and increase the temperature at which ethylene oxide is stable on the surface. We present a systematic study of the formation of chemisorbed oxygen on the Ag–Ni(111) surfaces and correlate the presence and absence of O1− and O2− surface species with the reactivity towards ethylene. By characterizing the samples with low-energy electron microscopy (LEEM) in combination with X-ray photoelectron spectroscopy (XPS), we have identified specific growth of silver on step-edge sites and successfully increased the temperature at which the produced ethylene oxide remains stable, a trait which is desirable for catalysis.

Graphical abstract: Interactions of oxygen and ethylene with submonolayer Ag films supported on Ni(111)

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C1CP20357F
Article type
Paper
Submitted
09 Feb 2011
Accepted
04 Apr 2011
First published
10 May 2011

Phys. Chem. Chem. Phys., 2011,13, 11034-11044

Permissions

Request permissions

Interactions of oxygen and ethylene with submonolayer Ag films supported on Ni(111)

R. E. Rettew, A. Meyer, S. D. Senanayake, T. Chen, C. Petersburg, J. Ingo Flege, J. Falta and F. M. Alamgir, Phys. Chem. Chem. Phys., 2011, 13, 11034 DOI: 10.1039/C1CP20357F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements