Electrochemical oxidation of molecular nitrogen to nitric acid: towards a molecular level understanding of the challenges

Megha Anand, Christina Susan Abraham, Jens K. Norskov*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

1 Downloads (Pure)

Abstract

Nitric acid is manufactured by oxidizing ammonia where the ammonia comes from an energy demanding and non-eco-friendly, Haber-Bosch process. Electrochemical oxidation of N2 to nitric acid using renewable electricity could be a promising alternative to bypass the ammonia route. In this work, we discuss the plausible reaction mechanisms of electrochemical N2 oxidation (N2OR) at the molecular level and its competition with the parasitic oxygen evolution reaction (OER). We suggest the design strategies for N2 oxidation electro-catalysts by first comparing the performance of two catalysts - TiO2(110) (poor OER catalyst) and IrO2(110) (good OER catalyst), towards dinitrogen oxidation and then establish trends/scaling relations to correlate OER and N2OR activities. The challenges associated with electrochemical N2OR are highlighted.
Original languageEnglish
JournalChemical Science
Volume12
Issue number18
Pages (from-to)6442-6448
ISSN2041-6520
DOIs
Publication statusPublished - 2021

Fingerprint Dive into the research topics of 'Electrochemical oxidation of molecular nitrogen to nitric acid: towards a molecular level understanding of the challenges'. Together they form a unique fingerprint.

Cite this