Electrochemical Synthesis of Nitrite and Nitrate via Cathodic Oxygen Activation in Liquefied Ammonia

被引:1
作者
Krebs, Moritz Lukas [1 ]
Schueth, Ferdi [1 ]
机构
[1] Max Planck Inst Kohlenforsch, Dept Heterogeneous Catalysis, D-45470 Mulheim, Germany
关键词
LIQUID-AMMONIA; SUPEROXIDE ION; OXIDATION; REDUCTION; MICROELECTRODES; GENERATION; MECHANISM;
D O I
10.1021/jacs.4c10279
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The electrochemical oxidation of ammonia (NH3) enables decentralized small-scale synthesis of nitrate (NO3 -) and nitrite (NO2 -) under ambient conditions by directly utilizing renewable energy. Yet, their electrosynthesis has been restricted to aqueous media and low ammonia concentrations. For the first time, we demonstrate here a strategy enabling the direct electrooxidation of liquefied NH3 to NO3 - and NO2 - by using molecular oxygen, achieving combined Faraday efficiencies above 40%.
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收藏
页码:30753 / 30757
页数:5
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