Average Deactivation Time of theHeterogeneous Reaction2 A+B2→2AB

Abstract

In the present paper we exactly solve the distributed parameter stochastic modelof the heterogeneous catalytic reaction2A+B2→2ABand calculate the averagenumber of reactive steps necessary to deactivate the lattice first,< t >. Resultsare compared with Monte Carlo simulations.< t >shows a nonmonotonic behaviorwith the sticking coefficient probabilitysand the desorption probabilitypd, reachinga maximum value that depends ons,pdand the lattice sizeN