Über die technische Darstellung von Ammoniak aus den Elementen

Operando investigations of the solid electrolyte interphase in the lithium mediated nitrogen reduction reaction

“…2 Currently, ammonia is produced almost exclusively from the Haber-Bosch process, which requires elevated temperatures and pressures (400-450 1C, 150-200 bar). 3 Electrochemical processes have been considered as alternatives for many years, however, progress was hindered by many erroneous reports. 4 The lithium-mediated nitrogen reduction reaction (Li-NRR) was first reported in 1930 by Fichter et al 5 and later by Tsuneto et al 6,7 in 1993.…”

Computational Insights on Structural Sensitivity of Cobalt in NO Electroreduction to Ammonia and Hydroxylamine

“…4,5 As a result, the removal of nitric oxide by the consumption of NH 3 or H 2 was designed to produce harmless dinitrogen based on a thermochemical selective catalytic reduction process. 6 As conventional ammonia synthesis based on Haber-Bosch process requires harsh conditions (high temperature and high pressure) 7 and leads to massive carbon emissions, 8,9 ammonia synthesis was proposed as an alternative target of electrochemical nitric oxide reduction reaction (eNORR), which has gained a lot of attention recently due to its potential to couple with renewable electricity. 10−12 For the new route, NO should be considered as a synthetic chemical, for instance, by N 2 + O 2 oxidative reforming, 13,14 instead of pollutant from environment.…”

“…As conventional ammonia synthesis based on Haber-Bosch process requires harsh conditions (high temperature and high pressure) and leads to massive carbon emissions, , ammonia synthesis was proposed as an alternative target of electrochemical nitric oxide reduction reaction (eNORR), which has gained a lot of attention recently due to its potential to couple with renewable electricity. − For the new route, NO should be considered as a synthetic chemical, for instance, by N 2 + O 2 oxidative reforming, , instead of pollutant from environment. A parallel route was also proposed by nitrate electroreduction for ammonia synthesis, while it is not competitive from Faradaic efficiency at low overpotentials and total charge consumption .…”

Operando probing of the surface chemistry during the Haber–Bosch process

“… The large-scale conversion of N 2 and H 2 into NH 3 (refs. 1 , 2 ) over Fe and Ru catalysts 3 for fertilizer production occurs through the Haber–Bosch process, which has been considered the most important scientific invention of the twentieth century 4 . The active component of the catalyst enabling the conversion was variously considered to be the oxide 5 , nitride 2 , metallic phase or surface nitride 6 , and the rate-limiting step has been associated with N 2 dissociation 7 – 9 , reaction of the adsorbed nitrogen 10 and also NH 3 desorption 11 .…”