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← ScienceWhich outcome results when a platinum catalyst fails in Selective Catalytic Reduction?
A)Increased NOx conversion to N2
B)Elevated NH3 slip at reactor exit✓
C)Unchanged reaction kinetics observed
D)Decreased SO2 to SO3 oxidation
💡 Explanation
Elevated NH3 slip occurs because catalyst poisoning reduces active surface area inhibiting complete NOx reduction; therefore, ammonia, rather than reacting forms nitrogen, passes unreacted, unlike scenarios with active catalysts or different reactions.
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