Material degradation can result from several factors:
1. Thermal Degradation: High temperatures can lead to sintering, phase changes, and loss of active sites. 2. Chemical Poisoning: Exposure to poisons like sulfur, lead, or phosphorous can deactivate catalysts. 3. Mechanical Wear: Attrition or fracturing due to mechanical stress or vibrations can degrade catalyst structure. 4. Corrosion: Exposure to reactive gases or liquids can lead to corrosion of the catalyst material.
