Elementary Steps and Mechanisms: Sections 5.3 – 5.5

Construction of Spatial Effect from Atomically Dispersed Co Anchoring on Subnanometer Ru Cluster for Enhanced N2-to-NH3 Conversion

“…The desire of a carbon-free society and the increasing demand of clean energy make green NH 3 synthesis following the electrolysis-driven Haber–Bosch ( e HB, Scheme ) protocol of “renewable energy power → electrolytic H 2 production → NH 3 synthesis → NH 3 storage” meaningful (Scheme ). At present, the pressure of the electrolysis system employed for H 2 production mostly lies in the range of 1.6–3.2 MPa, while that for industrial synthesis of NH 3 following the Haber–Bosch (HB) process using Fe-based catalysts requires stringent reaction conditions (400–600 °C, 20–40 MPa), consuming 1–2% of global energy and producing ∼1.5 tons of CO 2 per ton of NH 3 . , To match the pressure of the NH 3 synthetic process with that of the electrolysis H 2 system to avoid expensive pressure ramping for the adaptation of the e HB process, it is urgent and challenging to develop advanced catalysts that can produce NH 3 at relatively low temperatures and pressures.…”