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← ScienceWhich risk sharply increases when a platinum catalyst's surface energy falls during ammonia oxidation?
A)Reduced nitrogen product selectivity✓
B)Elevated catalyst thermal conductivity
C)Diminished reaction equilibrium constant
D)Increased reactant absorption efficiency
💡 Explanation
Decreased surface energy prompts catalyst restructuring to minimize overall formation energy through Ostwald ripening, because this reduces active sites and thus decreases selective conversion to N2, therefore lowering nitrogen selectivity rather than affecting conductivity, equilibrium constants or absorption.
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