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← ScienceWhich risk elevates when cooling molecular sieve desiccants?
A)Exothermic water adsorption decreases capacity
B)Endothermic oxygen desorption increases flammability
C)Molecular clustering reduces effective pore size✓
D)Framework flexibility impairs uniform adsorption
💡 Explanation
Molecular clustering around nucleation points is the mechanism which occurs because reduces pore accessibility and diffusivity decreases the effective surface area; therefore, decreased material kinetics results, rather than others like changing exothermic reactions, because molecular sieves selectivity depends on geometry.
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