What is it?
An electric current is supplied to isolated nitrogenase enzymes, which reduce nitrogen gas and water to form ammonia, whilst also producing hydrogen.
Why is it important?
Haber-Bosch synthesis is a well-established industrial process that has been optimised for hydrogen production.
- Volumetric hydrogen density: High (10.7kg H2 / m3 at 10 bar and 25°C)
- Gravimetric hydrogen density: High (17.8% by mass)
- Storage conditions: Liquid at ambient temperature, 10-11 bar pressure
- Synthesis energy efficiency: Production of hydrogen via SMR paired with Haber-Bosch synthesis has an overall energy efficiency of approximately 61-66%
- Established industrial process
- High operating temperature and pressures, highly energy-intensive
- Generates large amounts of carbon dioxide
- Diminishing returns expected from improvements to this synthesis method
- Improve catalyst development
- Integrate with renewable sources of hydrogen
Known active organisations
- The Australian National University
- The University of New South Wales
- The University of Western Australia