What are the Challenges in Controlling Particle Size?
While controlling particle size is beneficial, it poses several challenges:
Agglomeration: Smaller particles have a tendency to stick together, forming larger aggregates, which reduces the effective surface area. Sintering: High temperatures can cause small particles to merge into larger ones, reducing the number of active sites. Reproducibility: Achieving a consistent particle size distribution across different batches can be difficult. Stability: Smaller particles are often less stable, making them more susceptible to deactivation over time.
