Uniformity in a catalyst surface is important for several reasons:
1. Reproducibility: Uniform surfaces provide reproducible results because the reaction conditions are consistent across the entire surface. 2. Selectivity: The uniform nature of the active sites can enhance the selectivity of the catalyst towards a particular reaction pathway. 3. Activity: Uniform surfaces can optimize the activity of the catalyst by ensuring that all active sites are equally accessible to the reactants. 4. Longevity: Catalysts with uniform surfaces tend to degrade more slowly, as the wear and tear are evenly distributed.