The formation of products in chemical reactions requires reactants to overcome activation energy, the energy difference between the transition state and reactants. Only molecules with sufficient kinetic energy can do so, meaning reactions occur at varying rates. Catalysts, substances that reduce the activation energy, facilitate this process through catalysis. Catalysts are classified into heterogeneous, which operate in a different phase than reactants (e.g., catalytic converters in vehicles), and homogeneous, which share the same phase as reactants (e.g., acid-catalyzed esterification). Catalysis is vital in the chemical industry, enabling efficient reactions at lower temperatures and pressures, favoring specific reactions, and reducing waste. For instance, solid zeolite catalysts can replace stoichiometric reagents like aluminum chloride, enhancing sustainability and cost-effectiveness.