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Which consequence results when noble metal nanoparticle catalysts suffer from sintering?

A)Decreased reaction rate per reactor volume
B)Reduced activation energy via steric hindrance
C)Increased conversion due to Ostwald ripening
D)Enhanced selectivity for minor reaction products

💡 Explanation

Sintering reduces catalyst surface area via surface diffusion, therefore decreasing the reaction rate per volume because fewer active sites are exposed; rather than increasing overall conversion, sintering reduces catalyst efficiency for most reactions.

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