法拉第效率
氨生产
阳极
氨
电化学
催化作用
阴极
无机化学
产量(工程)
材料科学
化学工程
化学
电极
有机化学
物理化学
冶金
工程类
作者
Sorin Bunea,Marc‐Olivier Coppens,Atsushi Urakawa
标识
DOI:10.1021/acscatal.3c01600
摘要
The continuous electrochemical NO reduction to ammonia in a PEM cell was investigated in this work. We used a ruthenium-based catalyst at the cathode and an iridium oxide catalyst at the anode. The highest ammonia faradaic efficiency was observed at 1.9 V cell voltage. Adjusting the NO flow allowed to achieve 97% NO conversion and 93% ammonia faradaic efficiency for a 5.2% NO/He feed. The ammonia yield was 0.51 mmol cm–2 h–1, among the highest reported to date with the advantage of continuous operation. Experiments with a low NO concentration feed of 983 ppm showed 98% conversion at 0 V vs pseudo-RHE. Achieving this performance under such mild conditions indicates the great potential of the PEM cells for NOx abatement applications and the production of valuable NH3.
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