Identification, Quantification, and Elimination of NO_x and NH₃ Impurities for Aqueous and Li-Mediated Nitrogen Reduction Experiments

Lithium‐Mediated Nitrogen Reduction for Ammonia Synthesis: Reviewing the Gap between Continuous Electrolytic Cells and Stepwise Processes through Galvanic Li─N2 Cells

“…So, it has become clear that the E‐NRR process is too susceptible to false positives [ 40 ] and it requires very precise assessment procedures and gas purifications. [ 41 ] Among these, the cross‐check of electrochemical experiments with 15 N 2 isotope gas as a reactant and the subsequent nuclear magnetic resonance (NMR) analysis are needed to finally validate the obtained FE and NH 3 production rate. In this experiment, only the amount of 15 NH 3 detected is accountable as the “true” reaction product, while any presence of 14 NH 3 has to be assigned to impurities.…”