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Problem 1 . Assessment of Controlling Transport Resistances. Part 1 ( 1 0 points ) The first - order catalytic reaction A R with an

Problem 1. Assessment of Controlling Transport Resistances. Part 1(10 points)
The first-order catalytic reaction AR with an activation energy of 167kJmol is carefully
measured at a point where CAg=100molm3 and Tg=500K in an experimental reactor
containing 6mm catalyst pellets (L=110-3(m)).
(1) Find what factors influence the observed rate (pore diffusion, film mass transfer, particle
and/or film T. Also, find TS and find what fraction of the resistance is due to film mass
transfer.
(2) Find the parameter (see Chapter 22 handout) based on the isothermal pellet at TG free
of physical transport effects
(3) Find the reaction rate constant k,, at 500K. Also, define the complete units of k',".
The following thermodynamic, system and rate values are reported for this system.
-rA',,=1102molm3 catalyst-skeff=110-2Wm catalyst -K
Hr=1kJmol,h=1103Wm2 catalyst-K
Deff=110-8m2s,kg=1m3m2 catalyst-s
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