Elements of
Chemical Reaction Engineering
6th Edition



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Essentials of
Chemical Reaction Engineering
Second Edition

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Chapter 8: Multiple Reactions

Additional Homework Problems

CD8-15B

The hydrogenation of benzene (B) is carried out in a CSTR slurry reactor where the desired product is cyclohexene (C) [Chem. Eng. Sci., 51, 2873 (1996)].

The rate laws for reactions (1) and (2) at 403 K are

The rate laws are valid over the following range of partial pressures

                

The entering molar flow rate of benzene is 2 mol/s and it is necessary to achieve at least 40% conversion of benzene at 403 K.

    (a) At what entering conditions should the reaction be carried out to maximize the yield of cyclohexene?

    (b) For part (a), plot the molar flow rates as a function of PFR volume.