Details
| Original language | English |
|---|---|
| Pages (from-to) | 14620-14626 |
| Number of pages | 7 |
| Journal | Journal of Physical Chemistry B |
| Volume | 108 |
| Issue number | 38 |
| Publication status | Published - 7 Jul 2004 |
Abstract
The bistable behavior of the O2 + H2 reaction on Rh(110) is modified by the presence of coadsorbed potassium. Reaction fronts transporting potassium and the development of stationary Turing-like patterns have been observed. A realistic mathematical model is presented which reproduces qualitatively correct and, to a large part, even quantitatively correct the experimental results. Key factors of the model are the strong chemical affinity between coadsorbed oxygen and potassium, a reduced mobility of potassium on the oxygen covered surface, and a strongly reduced reactivity of oxygen toward hydrogen in the presence of coadsorbed potassium.
ASJC Scopus subject areas
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Surfaces, Coatings and Films
- Materials Science(all)
- Materials Chemistry
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In: Journal of Physical Chemistry B, Vol. 108, No. 38, 07.07.2004, p. 14620-14626.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Mathematical modeling of reactive phase separation in the system Rh(110)/K/O2 + H2
AU - Hinz, M.
AU - Günther, S.
AU - Marbach, H.
AU - Imbihl, R.
PY - 2004/7/7
Y1 - 2004/7/7
N2 - The bistable behavior of the O2 + H2 reaction on Rh(110) is modified by the presence of coadsorbed potassium. Reaction fronts transporting potassium and the development of stationary Turing-like patterns have been observed. A realistic mathematical model is presented which reproduces qualitatively correct and, to a large part, even quantitatively correct the experimental results. Key factors of the model are the strong chemical affinity between coadsorbed oxygen and potassium, a reduced mobility of potassium on the oxygen covered surface, and a strongly reduced reactivity of oxygen toward hydrogen in the presence of coadsorbed potassium.
AB - The bistable behavior of the O2 + H2 reaction on Rh(110) is modified by the presence of coadsorbed potassium. Reaction fronts transporting potassium and the development of stationary Turing-like patterns have been observed. A realistic mathematical model is presented which reproduces qualitatively correct and, to a large part, even quantitatively correct the experimental results. Key factors of the model are the strong chemical affinity between coadsorbed oxygen and potassium, a reduced mobility of potassium on the oxygen covered surface, and a strongly reduced reactivity of oxygen toward hydrogen in the presence of coadsorbed potassium.
UR - http://www.scopus.com/inward/record.url?scp=4944245156&partnerID=8YFLogxK
U2 - 10.1021/jp0493430
DO - 10.1021/jp0493430
M3 - Article
AN - SCOPUS:4944245156
VL - 108
SP - 14620
EP - 14626
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
SN - 1520-6106
IS - 38
ER -