Fast Proton NMR Detection of Aqueous Ammonia with Relaxation Agent and Nitrogen Decoupling.

ABSTRACT: The Haber-Bosch process, which synthesizes ammonia (NH₃) from nitrogen (N₂) and hydrogen (H₂), consumes approximately 2% of the global energy supply. A sustainable alternative is the direct electrochemical conversion of N₂ to NH₃. The selectivity and activity of the electrocatalysts for this process are assessed by quantifying the NH₃ present in the electrolyte. Compared with other analytical methods, ¹H NMR offers a straightforward approach for detecting NH₃ (by analyzing NH₄ ⁺). ¹H NMR method can also definitely confirm that the detected ammonia originates from the electroreduction of N₂ by comparing results obtained from isotopically labeled ¹⁵N<

SUBMITTER: Duan X 

PROVIDER: S-EPMC11886909 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature