Question

1. Consider a catalyst particle of radius R. This particle is in a catalytic reactor, where it is submerged in a gas stream containing the reactant A and product B. In the neighborhood of the surface of the particular catalyst particle under consideration, the concentration is CA0. Species A diffuses through the pores of the catalyst and form product B on the catalyst surface. If the reaction is of second order, find the Concentration profile of reactant A, Thiele Modulus and Effectiveness factor. Rework on the same problem by assuming reaction is of zero order. Compare both the Thiele Modulus and effectiveness factor profile. Which one will be more limited to the diffusional resistance.

          1. Consider a catalyst particle of radius R. This particle is in a catalytic reactor, where it is submerged in a gas stream containing the reactant A and product B. In the neighborhood of the surface of the particular catalyst particle under consideration, the concentration is CA0. Species A diffuses through the pores of the catalyst and form product B on the catalyst surface. If the reaction is of second order, find the Concentration profile of reactant A, Thiele Modulus and Effectiveness factor. Rework on the same problem by assuming reaction is of zero order. Compare both the Thiele Modulus and effectiveness factor profile. Which one will be more limited to the diffusional resistance.

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