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← ScienceWhich 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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