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← ScienceWhich constraint on hydrogen production increases when catalytic reactors experience sulfur poisoning?
A)Active catalyst site availability✓
B)Reactor wall heat transfer
C)Feedstock vapor compression ratio
D)Mechanical vibrational resonance frequency
💡 Explanation
Sulfur poisoning decreases availability because sulfur atoms preferentially bond to catalytic surfaces, blocking hydrogen formation via catalytic dehydrogenation involving surface adsorption; therefore activity drops rather than changing mechanical or thermal behaviors.
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