Several factors can contribute to the thermal instability of catalysts:
Material Composition: Catalysts made from materials with low melting points or those prone to oxidation can become unstable at high temperatures. Phase Changes: Some catalysts may undergo phase transitions that alter their active sites, rendering them ineffective. Sintering: Prolonged exposure to high temperatures can cause catalyst particles to agglomerate, reducing their surface area and activity. Chemical Decomposition: Certain catalysts can decompose into inactive forms or release volatile components when heated.
