Decarbonization Avenue : Green hydrogen

In fact

Hydrogen or ammonia?

Making ammonia from hydrogen is a well established process, actually very well established - The Haber-Bosch process for making ammonia was developed by Fritz Haber and Carl Bosch in 1909 and patented in 1910.

Ammonia has its advantages over hydrogen as a fuel. While its mass energy density is only about 15% that of hydrogen, its volume energy density is about 40% higher than for liquid hydrogen - about 12 MJ/L vs. 8.5 MJ/L

Liquid hydrogen has to be stored at cryogenic conditions of –253 °C, whereas ammonia can be stored at –33 °C. 

Ammonia is much less flammable than hydrogen, and on the hazardous chemicals, it belongs to the Class 2.2 (non-flammable, non-poisonous).

It is no wonder that, some sectors of the industry think that the ammonia economy as equally likely as the hydrogen economy.

Relevant for

  • Automobile engineer
  • Chemical engineer
  • Marine transport engineer

Innovation sector

  • Chemistry & chemical engineering
  • Energy storage

Other In fact


  • University researcher
  • Corporate researcher