New Insights into Electrocatalysis of Nitrogen Reduction to Ammonia

Presented on October 31, 2018 during the NH3 Fuel Conference 2018

Authors Alex Schechter Revanasiddappa Manjunatha Ariel University

Download this Presentation Download a PDF version of this presentation.

Abstract

Ammonia was electrochemically produced from nitrogen and water using a ruthenium–platinum (RuPt) alloy catalyst cathode and a nickel anode at ambient pressure and room temperature. The rate of ammonia formation was 5.1 × 10⁻⁹ gNH3 s⁻¹ cm⁻² with a 13.2% faradaic efficiency at an applied potential of 0.123 V vs. RHE; it reached 1.08 × 10⁻⁸ gNH3 s⁻¹ cm⁻² at 0.023 V. Ammonia production was investigated under selected potentials and temperatures. Real-time direct electrochemical mass spectrometric (DEMS) analysis of the evolved gases was performed at various applied potentials. In general, the mass-to-charge ratio signals of hydrogen and ammonia were detected, and their intensities increased with increasing potentials; however, there was no trace of a hydrazine signal. Compared to metallic ruthenium and platinum catalysts, RuPt showed a synergistic effect toward electrochemical formation of ammonia due to co-catalysis.

Topics Electrochemical Ammonia Energy Efficiency

Authors salex@ariel.ac.il Revanasiddappa.Manjunatha@ammoniaenergy.org

Madoqua Power2X webinar on Tuesday, November 26

Please join us for this informative webinar. Click here to register and get the details!

Annual Conference highlights industry advancements

It was an exciting three days in New Orleans with 300 attendees from 22 countries participating in our 21st AEA Annual Conference. Thank you to our generous sponsors and to all those who attended the conference. Stay tuned for a recap of the events and sessions. Presentations from all the sessions will be posted shortly.

Featured content

In 2023, AEA reached many milestones. Read about them in our 2023 Annual Report.