Achieving and maintaining high dispersion poses several challenges:
1. Sintering: At high temperatures, catalyst particles may sinter, leading to a loss of dispersion. 2. Agglomeration: During catalyst preparation, particles may agglomerate, reducing the effective surface area. 3. Characterization: Accurately measuring dispersion, especially in complex systems, can be challenging. Advanced characterization techniques are often required. 4. Stability: Maintaining high dispersion during catalytic reactions, especially under harsh conditions, requires robust catalyst design.
