Particle Size: Extended aging can lead to the growth or aggregation of particles, which can either enhance or diminish catalytic properties. Surface Area: Aging can alter the surface area of the catalyst, influencing its ability to adsorb reactants. Phase Composition: Different aging times can result in various crystalline phases or amorphous structures, impacting the catalyst's stability and activity. Pore Structure: The development of pore structures during aging can affect the accessibility of active sites and the diffusion of reactants and products. Chemical Composition: Aging can lead to changes in the chemical composition of the catalyst surface, affecting its interaction with reactants.
