Which consequence results when catalyst pellets crack in reactors?

💡 Explanation

Cracked catalyst pellets reduce reaction rate because the effective surface area decreases via physical reduction in catalyst grains during fracturing, hindering access to internal active sites, therefore activity declines, rather than pressure drop increasing or diffusion improving.

• Which outcome can result when applying extreme force during ionic crystal cleavage?
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• Which outcome results when specific impurities bridge band gaps?
• Which mechanism causes increased resistivity when lattice defects accumulate in a metal wire?
• Which outcome occurs when a catalyst deactivates during a continuous chemical reaction at steady temperature?
• Which limit exists when designing a Carnot heat engine operating between fixed high and low temperature reservoirs?