1. Reaction Rate: Good wettability ensures that reactants spread uniformly over the catalytic surface, increasing the available active sites and thereby accelerating the reaction rate. 2. Selectivity: Wettability can influence the selectivity of a catalyst by favoring the adsorption of certain reactants over others, leading to a more desired product. 3. Mass Transfer: Efficient wettability reduces the mass transfer limitations by ensuring that reactants are in close contact with the catalyst, facilitating quicker reaction times.