There is currently considerable interest in using ammonia, which is industrially produced from N2 and H2 from the Haber-Bosch process, to store hydrogen in condensed form as NH3 (l). One potential missing link in a fuel cycle that could have low carbon footprint is the facile conversion of ammonia to N2 and H2, where the H2 could be used to refuel hydrogen powered vehicles. In 2019, the Hamann and Smith research groups at MSU reported a Ru polypyridyl NH3 complex that is a precatalyst enabled the electrocatalytic oxidation of NH3 to N2, protons, and electrons. Recent results from this collaborative program will be presented, including chemical syntheses of potential intermediates and evaluation of their relevance in catalytic processes.

Stoichiometric and catalytic reactions of transition metal complexes relevant to ammonia oxidation

ACS Spring 2022

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