The choice of solvent can have a profound impact on catalytic reactions, particularly in liquid-phase systems. Solvents can affect the solubility of reactants, the stability of intermediates, and the interaction between reactants and the catalyst. Polar solvents, for example, can stabilize charged intermediates, while non-polar solvents might be better suited for reactions involving non-polar species. Selecting an appropriate solvent can therefore help in optimizing reaction conditions.