Green steel produced with ammonia

Ammonia synthesized in sun-rich countries could facilitate sustainable ironand steelmaking. Autocatalytic reduction of iron oxide by hydrogen released from ammonia cracking during the direct reduction process. T. You, Max-Planck-Institut für Eisenforschung GmbH - When it comes to sustainability and green steel, everybody talks about hydrogen. But current means of storing and transporting hydrogen request high pressures and low temperatures, which are both energetically and economically costly. Ammonia is known to be a good hydrogen carrier. Yan Ma and colleagues form the Max-Planck-Institut für Eisenforschung show that ammonia can not only be used to carry hydrogen but also for the direct redcution of iron which makes ammonia a viable candidate to overcome the shortcomings of hydrogen. Steel production is currently the biggest single cause of global warming, responsible for about seven percent of global CO₂ emissions.