Local Forcing of a Nonlinear Surface Reaction: CO Oxidation on Pt(100)
Document Type
Article
Subject Area(s)
Engineering, Chemical Engineering, Catalysis and Reaction Engineering
Abstract
A novel spatiotemporal perturbation method for nonlinear surface reactions is reported, thus allowing the creation of new spatially localized structures. Forcing was achieved by dosing reactant gases through a capillary positioned near the catalyst surface, providing control over the local surface coverage and reaction rate. The emergence of localized concentration patterns and oscillations in an otherwise stable system is attributed to a local modification of the catalytic properties of the surface due to external forcing. Based on the spatial orientation, the temporal and thermal stability of the modified surface, as well as the affinity of CO toward the perturbed surface, subsurface O is proposed as a possible source of the observed localized patterning and surface memory effect.
Digital Object Identifier (DOI)
Publication Info
Published in AIChE Journal, Volume 55, Issue 1, 2008, pages 172-179.
© AIChE Journal, 2008, Wiley Online Library
Bilbao, D., McMillan, N., Lauterbach, A.J., Snively, M.C. (2008). Local Forcing of a Nonlinear Surface Reaction: CO Oxidation on Pt(100). AIChE Journal, 55(1), 172-179.
Rights
© AIChE Journal, 2008, Wiley Online Library
Bilbao, D., McMillan, N., Lauterbach, A.J., Snively, M.C. (2008). Local Forcing of a Nonlinear Surface Reaction: CO Oxidation on Pt(100). AIChE Journal, 55(1), 172-179.