The Types segment classifies catalysts by their structural and functional characteristics, chiefly zeolite‑based, metal‑oxide, bifunctional, heterogeneous solid, and homogeneous liquid systems. Zeolite‑based catalysts, such as SAPO‑11 and ZSM‑5, provide strong acidity and shape‑selectivity, dominating high‑octane gasoline production. Metal‑oxide catalysts, including nickel or platinum supported on alumina, are prized for thermal stability in petrochemical feedstock conversion. Bifunctional catalysts combine acidic sites with metallic hydrogenation functions, enabling simultaneous isomerization and dehydrogenation, crucial for renewable fuel streams. Heterogeneous solid catalysts encompass non‑zeolitic solids like silica‑alumina blends, offering cost‑effective options for bulk applications. Homogeneous catalysts, though less common, involve soluble metal complexes that allow fine‑tuned selectivity for specialty chemical synthesis. Each type contributes uniquely to the market, with zeolite‑based and metal‑oxide categories together accounting for roughly 70 % of total sales, underscoring their pivotal role in market growth.