Among the many chemicals we use every day, ammonia is one of the worst for the atmosphere.
Among the many chemicals we use every day, ammonia is one of the worst for the atmosphere. The nitrogen-based chemical used in fertilizer, dyes, explosives and many other products ranks second only to cement in terms of carbon emissions, due to the high temperatures and energy needed to manufacture it.
But by improving on a well-known electrochemical reaction and orchestrating a “symphony” of lithium, nitrogen and hydrogen atoms, University of Illinois Chicago engineers led by Meenesh Singh have developed a new ammonia production process that meets several green targets.
The process, called lithium-mediated ammonia synthesis, combines nitrogen gas and a hydrogen-donating fluid such as ethanol with a charged lithium electrode. Instead of cracking apart nitrogen gas molecules with high temperature and pressure, nitrogen atoms stick to the lithium, then combine with hydrogen to make the ammonia molecule.
The reaction works at low temperatures, and it’s also regenerative, restoring the original materials with each cycle of ammonia production.
Read more at University of Illinois Chicago
