Question
Chemical Reaction Engineering Question on Diffusion effects in catalysis
A first-order heterogeneous reaction A→B is conducted using a porous spherical catalyst under isothermal conditions, where intraphase diffusion governs the reaction rate. At a bulk A concentration of 0.3 mol L−1, the observed reaction rate in a 3 mm diameter catalyst particle is 0.2 mol s−1 L−1 catalyst volume. At a bulk A concentration of 0.1 mol L−1, the observed reaction rate in a 6 mm diameter catalyst particle, in mol s−1 L−1 catalyst volume, is:
A
0.011
B
0.033
C
0.022
D
0.005
Answer
0.033
Explanation
Solution
The correct option is (B):0.033