Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5423596 | Surface Science | 2010 | 5 Pages |
Abstract
We have studied the adsorption and reaction of methanol on the bare and oxygen precovered Cu(1Â 1Â 0) surface at 200Â K using reflectance difference spectroscopy (RDS). On the bare and fully oxygen covered surface, the sticking coefficient is close to zero. In contrast, on the partially oxygen covered surface, a sticking coefficient close to unity is obtained. This observation suggests a high mobility of methanol on both bare and oxygen covered Cu(1Â 1Â 0) and of methoxy on Cu(1Â 1Â 0). Two reaction regimes, an oxygen supply limited and an adsorption site limited regime are identified. The transition between these two regimes occurs for an oxygen coverage of about 0.2.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
L.D. Sun, E. Demirci, R.E. Balderas-Navarro, A. Winkler, M. Hohage, P. Zeppenfeld,