Geometry-induced pulse instability in microdesigned catalysts: the effect of 
boundary curvature

Qiao, Liang; Kevrekidis, Ioannis G.; Punckt, Christian; Rotermund, Harm H.

doi:10.1103/PhysRevE.73.036217

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Geometry-induced pulse instability in microdesigned catalysts: the effect of boundary curvature

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Punckt, Christian
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Rotermund, Harm H.
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Qiao, L., Kevrekidis, I. G., Punckt, C., & Rotermund, H. H. (2006). Geometry-induced pulse instability in microdesigned catalysts: the effect of boundary curvature. Physical Review E, 73(3): 036217. doi:10.1103/PhysRevE.73.036217.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-05FD-9

Abstract

We explore the effect of boundary curvature on the instability of reactive pulses in the catalytic oxidation of CO on microdesigned Pt catalysts. Using ring-shaped domains of various radii, we find that the pulses disappear (decollate from the inert boundary) at a turning point bifurcation, and we trace this boundary in both physical and geometrical parameter space. These computations corroborate experimental observatioons of pulse decollation.