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(a)
Interpretation:
An equation for the effectiveness factor is to be stated.
Concept introduction:
The effectiveness factor is the division of the average rate of the reaction with rate of reaction at the bulk-stream point that is at boundary conditions or without diffusion. It is denoted by
(b)
Interpretation:
The concentration of the reactant at
Concept introduction:
The rate law of the chemical reaction states that the rate of reaction is the function of the concentration of the reactants and the products present in that specific reaction. The rate is actually predicted by the slowest step of the reaction. Catalyst increases the rate of the reaction.
(c)
Interpretation:
The reduction in the pore length of catalyst if the effectiveness is 0.8 is to be stated.
Concept introduction:
Internal effectiveness factor with respect to the concentration at the external surface of the pellet,
(d)
Interpretation:
The way by which it is suggest that catalyst support need to be plated after its reduction through grinding is to be stated.
Concept introduction:
Deactivation by Sintering (Aging): Sintering, also referred to as aging, is the loss of catalytic activity due to a loss of active surface area resulting from the prolonged exposure to high gas-phase temperatures. The active surface area may be lost either by crystal agglomeration and growth of the metals deposited on the support or by narrowing or closing of the pores inside the catalyst pellet.
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Elements of Chemical Reaction Engineering (5th Edition) (Prentice Hall International Series in the Physical and Chemical Engineering Sciences)
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