Speed catalyst

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There isn't a scientifically fixed number of catalyst types—catalysts can be classified by phase, mechanism, material, and application. Here are 100 catalyst categories/examples:

Chemical & industrial catalysts

  1. Homogeneous catalysts
  2. Heterogeneous catalysts
  3. Enzyme catalysts
  4. Organocatalysts
  5. Acid catalysts
  6. Base catalysts
  7. Redox catalysts
  8. Photocatalysts
  9. Electrocatalysts
  10. Biocatalysts
  11. Metal catalysts
  12. Metal-oxide catalysts
  13. Sulfide catalysts
  14. Nitride catalysts
  15. Carbide catalysts
  16. Zeolite catalysts
  17. Molecular-sieve catalysts
  18. Supported catalysts
  19. Bimetallic catalysts
  20. Multimetallic catalysts

Common metal catalysts

  1. Platinum catalysts
  2. Palladium catalysts
  3. Rhodium catalysts
  4. Ruthenium catalysts
  5. Iridium catalysts
  6. Nickel catalysts
  7. Cobalt catalysts
  8. Iron catalysts
  9. Copper catalysts
  10. Silver catalysts
  11. Gold catalysts
  12. Molybdenum catalysts
  13. Tungsten catalysts
  14. Vanadium catalysts
  15. Titanium catalysts
  16. Zinc catalysts
  17. Chromium catalysts
  18. Manganese catalysts
  19. Cerium catalysts
  20. Lanthanide catalysts

Petroleum & fuel catalysts

  1. Fluid catalytic cracking (FCC) catalysts
  2. Hydrocracking catalysts
  3. Hydrotreating catalysts
  4. Hydrodesulfurization catalysts
  5. Hydrodenitrogenation catalysts
  6. Reforming catalysts
  7. Isomerization catalysts
  8. Alkylation catalysts
  9. Hydrogenation catalysts
  10. Dehydrogenation catalysts
  11. Fischer–Tropsch catalysts
  12. Methanation catalysts
  13. Methanol-synthesis catalysts
  14. Syngas-conversion catalysts
  15. CO-shift catalysts
  16. Steam-reforming catalysts
  17. Partial-oxidation catalysts
  18. Fuel-cell catalysts
  19. Biodiesel-transesterification catalysts
  20. Biomass-conversion catalysts

Automotive catalysts

  1. Three-way catalytic converters
  2. Diesel oxidation catalysts
  3. Diesel particulate-filter catalysts
  4. Selective catalytic reduction (SCR) catalysts
  5. Lean-NOx trap catalysts
  6. NOx oxidation catalysts
  7. CO-oxidation catalysts
  8. Hydrocarbon-oxidation catalysts
  9. Exhaust-gas catalysts
  10. Methane-oxidation catalysts

Environmental catalysts

  1. Air-pollution catalysts
  2. VOC-oxidation catalysts
  3. Ozone-decomposition catalysts
  4. Wastewater catalysts
  5. Advanced-oxidation catalysts
  6. Photocatalytic water-treatment catalysts
  7. Nitrogen-removal catalysts
  8. Sulfur-removal catalysts
  9. CO₂-conversion catalysts
  10. Environmental remediation catalysts

Biological & pharmaceutical

  1. Protease enzymes
  2. Amylase enzymes
  3. Lipase enzymes
  4. Oxidase enzymes
  5. Reductase enzymes
  6. Transferase enzymes
  7. Hydrolase enzymes
  8. Isomerase enzymes
  9. Lyase enzymes
  10. Ligase enzymes

Advanced/emerging catalysts

  1. Nanoparticle catalysts
  2. Single-atom catalysts
  3. Metal–organic-framework (MOF) catalysts
  4. Covalent-organic-framework (COF) catalysts
  5. Carbon-based catalysts
  6. Graphene-based catalysts
  7. Quantum-dot photocatalysts
  8. Plasmonic catalysts
  9. Mechanocatalysts
  10. Artificial-enzyme catalysts

Important: some items above are broad categories, while others are specific catalyst technologies or catalyst families. They aren't 100 completely independent chemical types.

For your automotive-additives business, the most relevant distinction is that fuel additives are not necessarily catalysts. An octane booster, injector cleaner, or detergent additive can modify fuel properties or clean the fuel system without being a catalyst. A catalytic converter, by contrast, uses catalysts to accelerate exhaust reactions.

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