Article
Lattice‐gas model mimicking the NO+CO reaction on Pt(100)
The Journal of Chemical Physics
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
1-1-1994
DOI
10.1063/1.467570
Abstract
Various NO‐reduction reactions on Pt(100) exhibit similar dynamical behavior, presumably due to an empty site requirement for NO dissociation. This motivates analysis of a lattice‐gas model which incorporates this feature, and which here is chosen to mimic the NO+CO reaction on Pt(100): both reactants adsorb at single empty sites, NO instantaneously dissociates given an adjacent empty site (and nitrogen adatoms thus formed are immediately removed), and adjacent CO and O instantaneously react. We also include desorption of adsorbed NO and CO, but no adspecies diffusion. At lower temperatures where desorption is absent, we show that poisoning occurs with the reaction rate decreasing as RCO2 ∼ e−kt, where k≳0 except for equal reactant adsorption rates. The introduction of desorption produces reactive steady states, and (in different regimes) nonequilibrium poisoning transitions, critical points, and transitions to bistability.
Copyright Owner
American Institute of Physics
Copyright Date
1994
Language
en
File Format
application/pdf
Citation Information
Baoqi Meng, W. Henry Weinberg and James W. Evans. "Lattice‐gas model mimicking the NO+CO reaction on Pt(100)" The Journal of Chemical Physics Vol. 101 Iss. 4 (1994) p. 3234 - 3242 Available at: http://works.bepress.com/james-evans/138/
This article is published as Meng, Baoqi, W. Henry Weinberg, and J. W. Evans. "Lattice‐gas model mimicking the NO+ CO reaction on Pt (100)." The Journal of chemical physics 101, no. 4 (1994): 3234-3242, doi:10.1063/1.467570. Posted with permission.