Examine the reaction network and the reaction kinetics for ethylene oxide production in Appendix B, Section B.6.2. What conditions will maximize the selectivity for ethylene oxide? Sketch concentration profiles for the case when this reaction is run in a packed bed modeled as a PFR.

Data from section B.6.2

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The pertinent reactions (adapted from Stoukides and Pavlou [3]) are as follows: CH, +0,5 0, CHO + CH, 30, 2CO, + 2H,O CHO+2.5 02 2CO + 2HO The kinetic expressions are, respectively. 1 1.96 exp(-2400/RTP 1 +0.00098 exp(11,200/RT)Petkykne 0.0936 exp(-6400/RT)Peme Petinylene 12 1+0.00098 exp(11,200/RT)pet 0.42768 exp(-6200/RT)Phone ide 13 1+0.000033 exp(21,200/RT)Perrie (B.6.1) (B.6.2) (B.6.3) (B.6.4) (B.6.5) (B.6.6) The units for the reaction rates are moles/m s. The pressure unit is bar. The activation energy