Several factors can cause deformation in catalysts, including:
Thermal Stress: High temperatures can lead to expansion and contraction of the catalyst, causing deformation. These thermal cycles can weaken the catalyst structure over time. Mechanical Stress: Physical forces applied to the catalyst, such as pressure from reactant gases or liquids, can lead to deformation. Chemical Reactions: The interaction between the catalyst and reactants can lead to changes in the catalyst structure, such as the formation of new phases or compounds. Aging: Over time, catalysts can undergo structural changes due to prolonged exposure to reaction conditions, leading to gradual deformation.