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← ScienceWhich outcome reduces catalyst efficiency prematurely in a converter?
A)Reaction product accumulation on active sites✓
B)Decreasing reactor wall surface gradient
C)Depletion of reactants near the inlet
D)Increasing average reactor fluid dynamics
💡 Explanation
Reaction product accumulation causes catalyst poisoning via competitive **adsorption**, blocking reactant access, because the increased product concentration overwhelms the active catalytic sites; therefore, poisoning is faster, rather than decreased activity from thermodynamic limitations or uneven reagent distribution.
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