Homogeneous electrocatalytic oxidation of ammonia to N2 under mild conditions.
Faezeh HabibzadehSusanne L MillerThomas W HamannMilton R SmithPublished in: Proceedings of the National Academy of Sciences of the United States of America (2019)
We report that ruthenium polypyridyl complexes can catalyze ammonia oxidation to dinitrogen at room temperature and ambient pressure. During bulk electrolysis experiments, gas chromatography and mass spectrometry analysis of the headspace in the electrochemical cell showed that dinitrogen and dihydrogen are generated from ammonia with high faradaic efficiencies. A proposed mechanism where a hydrazine complex is the initial N-N bonded intermediate is supported by chemical and electrochemical experiments. This is a well-defined system for homogeneous electrocatalytic ammonia oxidation. It establishes a platform for answering mechanistic questions relevant to using ammonia to store and distribute renewable energy.
Keyphrases
- room temperature
- gas chromatography
- mass spectrometry
- ionic liquid
- anaerobic digestion
- tandem mass spectrometry
- hydrogen peroxide
- gold nanoparticles
- gas chromatography mass spectrometry
- liquid chromatography
- high resolution mass spectrometry
- electron transfer
- high throughput
- high resolution
- solid phase extraction
- stem cells
- molecularly imprinted
- cell therapy
- mesenchymal stem cells
- metal organic framework
- ms ms
- visible light