Petrochemical plants employ a variety of catalysts, primarily categorized into two types: - Heterogeneous Catalysts: These catalysts exist in a different phase than the reactants, usually solid catalysts interacting with liquid or gas-phase reactants. Common examples include zeolites and metal oxides. - Homogeneous Catalysts: These catalysts share the same phase as the reactants, typically in solution. Examples include transition metal complexes.
