Elements of
Chemical Reaction Engineering
6th Edition



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Essentials of
Chemical Reaction Engineering
Second Edition

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Chapter 14: External Diffusion Effects on Heteregeneous Reactions

More on Mole Balance with Diffusion and Reactions in 3-D

We can also apply the mole balance of an element of value DxDyDz to obtain the variation of flow rates in three dimensions

            

                               

     

                        

Dividing by DxDyDz and taking the limit as they go to zero

                       

Equations for Figure

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