A MONTE-CARLO SIMULATION FOR THE CATALYTIC-OXIDATION OF CO ON DLA CLUSTERS

A Monte Carlo simulation for the heterogeneously catalyzed oxidation o f CO on diffusion limited aggregation clusters is introduced. Kinetic phase transition points which appear in this reaction system are studi ed as a function of the system parameters. Both the 0 poisoning transi tion at y1 and the CO poisoning transition at y2 are found al very low values and they are second-order transitions. This holds even in the presence of CO diffusion. The results will be compared with simulation s which were performed on regular and other fractal surfaces. The stro ng influence of the lattice structure is discussed in detail.