Chemical Pulse Dynamics and Control in Microdesigned Catalysts: Phenomena, Modeling and Computational Wrappers

L. Qiao, and I.G. Kevrekidis
Department of Chemical Engineering, Princeton University

We study the effect of two-dimensional composite catalyst geometry and spatiotemporal laser heating on the dynamics of CO oxidation on a Pt (110) surface. The project involves a combination of modeling, computation and experimentation.

We show (through both FEMLAB and specially designed experiments) that local laser heating actuation appropriately designed in space and time can be critical in directing the reactive pulse propagation.

Large scale, matrix-free computational techniques are “wrapped around” FEMLAB to locate stationary and rotating solutions through pseudoarclength continuation, and to analyze their stability as a function of system parameters.