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Ammonia reforming catalysts

Ammonia cracking catalysts


Anhydrous ammonia has a very high energy density even at low pressures when compared to hydrogen, making it thus potentially attractive as a medium to store hydrogen. In fact, ammonia contains a large weight fraction of hydrogen (17.65 % of the mass of ammonia), and it has a volumetric hydrogen density even higher than that of liquid hydrogen. Based on several desirable characteristics (it is produced economically via a mature industrial process, it has a low flammability and it is non-explosive, although it suffers from toxicity concerns), liquid anhydrous ammonia is considered as an attractive fuel for transport and fuel cell applications.

Ammonia can be decomposed, or cracked, over a catalyst to produce hydrogen and nitrogen. This mixture can be converted efficiently into electricity using a fuel cell.

Ammonia decomposition is an endothermic reaction, and the temperature required for an efficient cracking depends on the catalyst employed. There are a wide variety of catalytic materials that have been proved to be effective for this reaction, but some still require high operating temperatures (e.g. above 900 °C).

ACTA has developed highly efficient catalysts for ammonia cracking based on both PGM and PGM-free metals:

10510 Series: Noble metal free catalyst (without Ruthenium), fully converts ammonia to hydrogen at 500°C. This product is available as powder. Formed catalyst would be available upon request.


10010 Series: A ruthenium-based catalyst which decomposes ammonia with full conversion to hydrogen at 400°C. This catalyst is available in powder or selected pellet form.

  • Available in gram or kilogram quantities.
  • Price on request.