Two-layer CA for simulation of catalytic reaction at dynamically varying surface temperature

A two-layer cellular automata (CA) model of carbon monoxide (CO) oxidation reaction on platinum catalyst allowing for surface temperature variations is proposed and investigated. This reaction in non-equilibrium conditions can be accompanied by appearance of different types of surface waves on the catalyst. A two-layer CA is a parallel composition of the two CA: the main CA simulating the oxidation reaction, and the second layer CA simulating spatio-temporal temperature distribution over the catalyst surface. Using the second layer allows us to take into account changes of surface catalytic properties when temperature changes and investigate the oxidation reaction dynamics for different temperature.