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← ScienceWhich mechanism causes slowed catalytic conversion when a packed bed reactor experiences channeling?
A)Reduced effective catalyst surface area✓
B)Increased reactant mean free path
C)Enhanced thermal boundary layer mixing
D)Elevated intraparticle pore diffusion
💡 Explanation
Channeling causes bypassing; therefore, the reduced contact decreases available area because only a fraction of the catalyst participates in reactions, rather than increased diffusion or mixing that might counteract the reduction.
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