Which risk increases with a heterogeneous catalyst used in a fixed-bed reactor when the temperature exceeds a threshold?

💡 Explanation

When the temperature exceeds a threshold, particle sintering occurs due to surface diffusion accelerated by high temperatures, leading to decreased porosity and increased particle size, resulting in a higher pressure drop. Therefore, an increased pressure drop from particle sintering results, rather than poisoning, reduced selectivity or runaway reaction which operate through different processes.

• Which consequence results when signal distortion depolarizes light?
• Which risk increases within ITER when plasma current disruption occurs?
• Which consequence results when crystalline silicon contains impurities forming mid-gap states?
• Which mechanism increases stability during iron nuclei formation?
• Which mechanism leads to quantized conductance in quantum wires?
• Which distortion occurs when a pulsed titanium-sapphire laser's repetition rate approaches the gain medium's relaxation time?