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Which outcome occurs when metallic catalysts sinter during exothermic processing?

A)Surface area decreases lowering conversion
B)Improved reactant distribution across gradient
C)Increased active site exposure globally
D)Higher order reaction rates occur

💡 Explanation

Decreased surface area lowers reactant catalytic conversion because sintering promotes grain growth decreasing active site exposure. Catalyst effectiveness declines heavily, therefore conversion reduction results, rather than altered reactant pathways or favorable site exposure.

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