Chemical Engineering > GATE 2016 > Thiele Modulus
A porous pellet with Pt dispersed in it is used to carry out a catalytic reaction. Following two scenarios are possible. Scenario 1: Pt present throughout the pores of the pellet is used for catalyzing the reaction. Scenario 2: Pt present only in the immediate vicinity of the external surface of the pellet is used for catalyzing the reaction. At a large value of Thiele modulus, which one of the following statements is TRUE?
A
(A) Since the reaction rate is much greater than the diffusion rate, Scenario 1 occurs
B
(B) Since the reaction rate is much greater than the diffusion rate, Scenario 2 occurs
C
(C) Since the reaction rate is much lower than the diffusion rate, Scenario 1 occurs
D
(D) Since the reaction rate is much lower than the diffusion rate, Scenario 2 occurs

Correct : b

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Related Topics

catalytic reaction porous pellet GATE Chemical Engineering 2016 Thiele modulus reaction rate diffusion porous media catalysis chemical engineering gate diffusion controlled catalysis reaction rate diffusion rate porous pellet catalysis

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