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RETRACTED: Ammonia synthesis by N 2 and steam electrolysis in molten hydroxide suspensions of nanoscale Fe 2 O 3
Abstract
The Haber-Bosch process to produce ammonia for fertilizer currently relies on carbon-intensive steam reforming of methane as a hydrogen source. We present an electrochemical pathway in which ammonia is produced by electrolysis of air and steam in a molten hydroxide suspension of nano-Fe2O3. At 200°C in an electrolyte with a molar ratio of 0.5 NaOH/0.5 KOH, ammonia is produced at 1.2 volts (V) under 2 milliamperes per centimeter squared (mA cm(-2)) of applied current at coulombic efficiency of 35% (35% of the applied current results in the six-electron conversion of N2 and water to ammonia, and excess H2 is cogenerated with the ammonia). At 250°C and 25 bar of steam pressure, the electrolysis voltage necessary…
Citation impact
- FWCI
- 14.16
- Percentile
- 100%
- References
- 32
Authors
6Topics & keywords
- Electrolysis
- Hydroxide
- Ammonia
- Ammonia production
- Nanoscopic scale
- Chemical engineering
- Materials science
- Chemistry