Mechanocatalytic Room‐Temperature Synthesis of Ammonia from Its Elements Down to Atmospheric Pressure

Ammonia synthesis via the high-temperature and high-pressure Haber-Bosch process is one of most important chemical processes in world. In spite numerous attempts over last 100 years, continuous type ammonia at room-temperature had not been possible, yet. We report development a mechanocatalytic system operating continuously pressures down to 1 bar. With optimized experimental conditions, cesium-promoted iron catalyst was shown produce concentrations more than 0.2 vol. % for 50 hours.