Material Insights · Understanding the Material World

Refining catalysts

Catalysts that let oil refineries crack heavy oil into petrol and strip sulphur from diesel; a consumable sold by a handful of firms.

Specialty chemicals · Catalysts · No. 74

  • Product family
  • Feedstock: Minerals and salts
  • FCC catalyst roughly 0.5-0.9 Mt a year (indicative, basis: several hundred FCC units each adding about 1-3 t a day of fresh catalyst, larger units more); hydroprocessing catalysts not published
  • HS 381519
Specialty chemicals · Catalysts · Foundation · Matter

Your petrol was cracked from heavy oil by a fine clay powder spiked with rare earths, mostly made by three firms.

Chart: Illustration: Refining catalysts

Where it comes from

Chart: Map of where it comes from

Zeolite Y is grown from silicate and alumina gels, exchanged with lanthanum, then bound with kaolin and spray dried; FCC catalyst holds about 1-3% rare earth oxide.

Three things to know
  1. Grace, BASF and Ketjen together hold roughly 75% of the US market for FCC catalyst.
  2. Ketjen, one of the big three, had 2025 sales of $1,066 million, up from $1,036 million in 2024.
  3. India's BS-VI fuel rules since April 2020 demand 10 ppm sulphur fuels, which need deep hydrotreating catalysts.
The journey
  1. 1 MineralsKaolin, silica, alumina, rare earths, molybdenum
  2. 2 Zeolite makingZeolite Y crystallised and loaded with lanthanum
  3. 3 ShapingSpray-dried powders or metal-soaked extrudates
  4. 4 Refinery unitsCracks heavy oil, strips sulphur from diesel
  5. 5 Spent catalystRegenerated or reclaimed as hazardous waste
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