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A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?

Question: A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?
[A].

Inner catalyst core of radius R/8 does not participate in reaction.

[B].

Inner catalyst core of radius R/2 does not participate in reaction.

[C].

Inner catalyst core of radius 7R/8 does not participate in reaction.

[D].

Effectiveness factor for a zero order reaction can not be 7/8 as it must always be 1.

Answer: Option A

Explanation:

No answer description available for this question.