Which mechanism causes a solid catalyst's effectiveness to diminish over time in a chemical reactor?

💡 Explanation

When reactant stream impurities adsorb strongly to the catalyst surface, catalyst poisoning occurs because the active sites are blocked irreversibly, preventing reactant binding and reducing catalytic activity. Therefore catalyst poisoning results, rather than phase transition, saturation, or reduced pressure effects which depend on different physical properties.

• Which effect on light occurs because spacetime is warped by extreme mass?
• Which risk increases when operating a solid-state drive near its specified maximum sustained write current?
• Which consequence result during liquid crystal display production when coating alignment layers incorrectly?
• Which outcome accelerates when sodium chloride crystal defects increase?
• Which outcome occurs from mismatched orbital symmetry during cycloaddition?
• Which mechanism causes increased conductivity when a semiconductor absorbs photons?