Which outcome reduces a solid catalyst's turnover rate when pore diffusion is limiting?

💡 Explanation

Increased temperature gradients decrease turnover rate because the **Arrhenius equation** dictates exponentially lower rate at cooler interior sites relative to an assumed hot surface; therefore performance declines, rather than an enhancement typical with more uniform temperatures.

• For a U-235 nuclear reactor operating at maximum designed thermal output, which risk arises from decreased coolant flow to the core?
• Which risk increases when lubricating oil viscosity degrades inside a hydraulic actuator?
• Which risk increases when enriched uranium isotopes accumulate impurities?
• Which mechanism explains power generation in radioisotope thermoelectric generators?
• Which outcome occurs when a uranium enrichment facility prioritizes lighter isotopes?
• Which outcome will occur when hydrogen embrittlement reaches critical levels in high-strength steel?