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The heterogeneous electrocatalytic synthesis of ammonia from nitrogen and water is carried out at Ru cathodes, using a Solid Polymer Electrolyte Cell (SPE), at atmospheric pressure and low temperature; the reduction rate increases with increase of temperature up to 100 °C, while with the increase of the negative potential a maximum is observed at −1.02 V vs. Ag/AgCl and gradually decreases in the hydrogen discharge region.
Kordali et al. (Sat,) studied this question.