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Which risk increases when a packed bed reactor catalyst becomes poisoned by sulfur compounds?

A)Increased production of side products
B)Runaway reaction due to decreased selectivity
C)Thermal stress from decreased heat transfer
D)Reduced pressure drop across the bed

💡 Explanation

When a sulfur compound poisons a packed bed catalyst, it deactivates active sites, altering the reaction pathway because it favors less energetically favorable reactions. Therefore increased side products result, rather than runaway reaction, altered heat transfer, or reduced pressure drop which require alternative mechanisms.

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