Details
| Original language | English |
|---|---|
| Pages (from-to) | 321-330 |
| Number of pages | 10 |
| Journal | Catalysis today |
| Volume | 70 |
| Issue number | 4 |
| Publication status | Published - 1 Nov 2001 |
| Event | Spatiotemporal Catalytic Patterns (SHEINTUCH S.I.) - Haifa, Israel Duration: 15 Oct 2000 → 15 Oct 2000 |
Abstract
The catalytic O2+H2 reaction on Rh(1 1 1) has been investigated in the 10-6-10-5mbar range using photoelectron emission microscopy as spatially resolving method. While the reaction without pretreatment of the sample displays simple bistable behavior, we find that after extended pre-oxidation of the sample (pO(2) = 2 × 10-4mbar,T = 770 K, tOX > 24 h), low work function (LWF) areas develop dynamically in the collision of reaction fronts. The LWF areas have been assigned to subsurface oxygen. We present a simple three-variable model which reproduces the formation of LWF areas in the collision of reaction fronts.
Keywords
- Low work function, Photoelectron emission microscopy, Subsurface oxygen formation
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
- General Chemistry
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In: Catalysis today, Vol. 70, No. 4, 01.11.2001, p. 321-330.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Dynamics of subsurface oxygen formation in catalytic water formation on a Rh(1 1 1) surface
T2 - Spatiotemporal Catalytic Patterns (SHEINTUCH S.I.)
AU - Monine, M. I.
AU - Schaak, A.
AU - Rubinstein, B. Y.
AU - Imbihl, R.
AU - Pismen, L. M.
N1 - Funding Information: This work has been supported by the German–Israeli Science Foundation. M.M and L.P. acknowledge the support by the Minerva Center for Nonlinear Physics of Complex Systems.
PY - 2001/11/1
Y1 - 2001/11/1
N2 - The catalytic O2+H2 reaction on Rh(1 1 1) has been investigated in the 10-6-10-5mbar range using photoelectron emission microscopy as spatially resolving method. While the reaction without pretreatment of the sample displays simple bistable behavior, we find that after extended pre-oxidation of the sample (pO(2) = 2 × 10-4mbar,T = 770 K, tOX > 24 h), low work function (LWF) areas develop dynamically in the collision of reaction fronts. The LWF areas have been assigned to subsurface oxygen. We present a simple three-variable model which reproduces the formation of LWF areas in the collision of reaction fronts.
AB - The catalytic O2+H2 reaction on Rh(1 1 1) has been investigated in the 10-6-10-5mbar range using photoelectron emission microscopy as spatially resolving method. While the reaction without pretreatment of the sample displays simple bistable behavior, we find that after extended pre-oxidation of the sample (pO(2) = 2 × 10-4mbar,T = 770 K, tOX > 24 h), low work function (LWF) areas develop dynamically in the collision of reaction fronts. The LWF areas have been assigned to subsurface oxygen. We present a simple three-variable model which reproduces the formation of LWF areas in the collision of reaction fronts.
KW - Low work function
KW - Photoelectron emission microscopy
KW - Subsurface oxygen formation
UR - http://www.scopus.com/inward/record.url?scp=0035504255&partnerID=8YFLogxK
U2 - 10.1016/S0920-5861(01)00340-6
DO - 10.1016/S0920-5861(01)00340-6
M3 - Conference article
AN - SCOPUS:0035504255
VL - 70
SP - 321
EP - 330
JO - Catalysis today
JF - Catalysis today
SN - 0920-5861
IS - 4
Y2 - 15 October 2000 through 15 October 2000
ER -