INFLUENCE OF GLOBAL COUPLING THROUGH THE GAS-PHASE ON THE DYNAMICS OFCO OXIDATION ON PT(110)

Authors
FALCKE M ENGEL H
Citation
M. Falcke et H. Engel, INFLUENCE OF GLOBAL COUPLING THROUGH THE GAS-PHASE ON THE DYNAMICS OFCO OXIDATION ON PT(110), Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 50(2), 1994, pp. 1353-1359
Citations number
15
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
50
Issue
2
Year of publication
1994
Part
B
Pages
1353 - 1359
Database
ISI
SICI code
1063-651X(1994)50:2<1353:IOGCTT>2.0.ZU;2-Q
Abstract
In CO oxidation on platinum single-crystal surfaces spatial coupling t akes place via two basic mechanisms: locally by surface diffusion of m obile adsorbates and globally by pressure changes in the gas phase. Th e effect of these two competing coupling modes on the dynamics of the reaction is studied using a reaction-diffusion model supplemented by a n equation for the balance of the partial pressure of CO in the gas ph ase. The integral reaction rate and the associated spatiotemporal patt erns of CO coverage show strong influence of coupling through the gas phase.