Details
| Original language | English |
|---|---|
| Pages (from-to) | 295-301 |
| Number of pages | 7 |
| Journal | Journal of catalysis |
| Volume | 232 |
| Issue number | 2 |
| Early online date | 25 Apr 2005 |
| Publication status | E-pub ahead of print - 25 Apr 2005 |
Abstract
The kinetics of methanol oxidation on a Cu(110) surface have been followed under stationary reaction conditions in the 10-7 to 10-5 mbar range with low-energy electron diffraction, Auger electron spectroscopy, photoelectron emission microscopy, and rate measurements. A large, 300-400 K-wide hysteresis occurs with cycling of the temperature. The (5×2) and c(2×2) structures, attributed to intermediates of the reaction, are seen only in a T-interval from 300 to ≈380 K, where the reaction ignites. The surface exhibits substantial carbon coverage upon heating, but on the cooling branch the surface is largely carbon free down to ≈400 K, where the surface becomes covered by C-containing adsorbates again.
Keywords
- Copper(110), Formaldehyde, Hysteresis, Methanol oxidation, Ordered overlayer
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Journal of catalysis, Vol. 232, No. 2, 25.04.2005, p. 295-301.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Low-pressure methanol oxidation over a Cu(110) surface under stationary conditions
T2 - (II) adsorbate coverages and reactivity
AU - Zhou, L.
AU - Günther, S.
AU - Imbihl, R.
N1 - Funding Information: This work was supported by the DFG under the priority program 1091 “Bridging the gap between ideal and real systems in heterogeneous catalysis.”
PY - 2005/4/25
Y1 - 2005/4/25
N2 - The kinetics of methanol oxidation on a Cu(110) surface have been followed under stationary reaction conditions in the 10-7 to 10-5 mbar range with low-energy electron diffraction, Auger electron spectroscopy, photoelectron emission microscopy, and rate measurements. A large, 300-400 K-wide hysteresis occurs with cycling of the temperature. The (5×2) and c(2×2) structures, attributed to intermediates of the reaction, are seen only in a T-interval from 300 to ≈380 K, where the reaction ignites. The surface exhibits substantial carbon coverage upon heating, but on the cooling branch the surface is largely carbon free down to ≈400 K, where the surface becomes covered by C-containing adsorbates again.
AB - The kinetics of methanol oxidation on a Cu(110) surface have been followed under stationary reaction conditions in the 10-7 to 10-5 mbar range with low-energy electron diffraction, Auger electron spectroscopy, photoelectron emission microscopy, and rate measurements. A large, 300-400 K-wide hysteresis occurs with cycling of the temperature. The (5×2) and c(2×2) structures, attributed to intermediates of the reaction, are seen only in a T-interval from 300 to ≈380 K, where the reaction ignites. The surface exhibits substantial carbon coverage upon heating, but on the cooling branch the surface is largely carbon free down to ≈400 K, where the surface becomes covered by C-containing adsorbates again.
KW - Copper(110)
KW - Formaldehyde
KW - Hysteresis
KW - Methanol oxidation
KW - Ordered overlayer
UR - http://www.scopus.com/inward/record.url?scp=19944371248&partnerID=8YFLogxK
U2 - 10.1016/j.jcat.2004.11.038
DO - 10.1016/j.jcat.2004.11.038
M3 - Article
AN - SCOPUS:19944371248
VL - 232
SP - 295
EP - 301
JO - Journal of catalysis
JF - Journal of catalysis
SN - 0021-9517
IS - 2
ER -