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Chemical Engineering - Chemical Reaction Engineering

Exercise : Chemical Reaction Engineering - Section 10
46.
The effectiveness factor for large value of Thiele modulus (LK/D1) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2/second)
L(K/D1)
1/(LK/D1)
1
∞
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
A first order reaction A B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by
diffusion within the pellet.
reaction.
external mass transfer.
none of the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Following isothermal kinetic data are obtained in a basket type of mixed flow reactor for a porous catalyst. Determine the role of pore diffusion and external mass transfer processes.
Strong pore diffusion control and mass transfer not controlling.
Both pore diffusion and mass transfer not controlling.
Both pore diffusion and mass transfer controlling.
Mass transfer controlling.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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