Elements of
Chemical Reaction Engineering
6th Edition



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Essentials of
Chemical Reaction Engineering
Second Edition

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Chapter 15: Diffusion and Reaction in Porous Catalysts

Effectiveness factor for arbitrary reaction order

Spherical Catalyst Pellet

A -> B

1. Mole Balance

2. Constitutive Equation

3. Rate Law

4. Combine

Let: R/3 be the characteristic length

Consider the last term of the above equation.

Close to outer surface

Coordinate Stretching

Let

Divide by

For large fn

Let

If



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