Pulse propagation and oscillatory behavior in the NO+H2 reaction on a Rh(110) surface
- authored by
- F. Mertens, R. Imbihl
- Abstract
Target patterns, rotating spiral waves and solitary pulses have been found in the NO+H2 reaction under nonoscillatory conditions, i.e., when the system was an excitable medium. Using photoelectron emission microscopy (PEEM) as spatially resolving method the parameter dependence of the front velocities, the width of the pulses and the rotational period of the spiral waves were studied for fixed pNO= 1.8 × 10-6 mbar in a T- range 520-620 K. The front velocities were strongly anisotropic with the degree of anisotropy depending on the pH2 T parameters. Under reaction conditions close to the high pH2 boundary for pattern formation, gas-phase coupling becomes efficient, thus, oscillations in the N2 production rate can be observed.
- Organisation(s)
-
Institute of Physical Chemistry and Electrochemistry
- External Organisation(s)
-
Fritz Haber Institute of the Max Planck Society (FHI)
University of Texas at Austin
- Type
- Article
- Journal
- Journal of Chemical Physics
- Volume
- 105
- Pages
- 4317-4322
- No. of pages
- 6
- ISSN
- 0021-9606
- Publication date
- 08.09.1996
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- General Physics and Astronomy, Physical and Theoretical Chemistry
- Electronic version(s)
-
https://doi.org/10.1063/1.472248 (Access:
Closed)
