Abstract
The effectiveness factor and the selectivity are calculated for a consecutive reaction where the kinetics follow the Langmuir-Hinshelwood types of rate equations. The computational results are extended to cases where the first order specific catalytic activity varies inside a catalyst pellet and it is shown that the selectivity is greatly changeable by the difference in the distribution of the rate constant inside the catalyst even in the case where the overall reaction rate of the reactant has the same value.
