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← ScienceWhich outcome occurs when a molecular sieve catalyst degrades?
A)Reduced reactant shape selectivity✓
B)Enhanced product flash point
C)Increased catalyst surface area
D)Decreased catalyst density
💡 Explanation
Degradation introduces amorphous regions that disrupt crystallinity. It causes reduced shape selectivity because reactant molecules can now access more diverse, less confined active sites; therefore, products with lower purity are realized, rather than altered flash points.
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