Effect of Feed Trajectory on Conversion and Selectivity

Using this ramped feed flow policy permits fairly tight temperature control. The resulting conversion and selectivity using this feed strategy can be calculated from the initial amount of A charged to the reactor and the final amounts of C and D in the reactor at the end of the batch. 

Note that selectivity is defined as the ratio of the moles of B that have gone into the production of the desired product C to the total moles of B that have been consumed in producing both C and D. These results show that a slow feedrate keeps the concentration 

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