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Advances in Electrochemical Ammonia Synthesis Beyond the Use of Nitrogen Gas as a Source
ChemPlusChem ( IF 3.4 ) Pub Date : 2021-08-19 , DOI: 10.1002/cplu.202100356
Tong Mou 1 , Jun Long 2 , Thomas Frauenheim 1, 3 , Jianping Xiao 2, 4, 5
Affiliation  

Electrocatalytic reduction of dinitrogen has emerged as a new strategy for ammonia synthesis. Despite being environmentally benign and energy-saving, it suffers from low conversion efficiency and short yield of ammonia because of the challenges of activating the inert N≡N bond at room temperature and atmospheric pressure. As a result of this, researchers proposed to reduce the nitrogenous species, one category of air and water pollutants, into valuable ammonia. Although remaining largely underexplored, this alternative approach shows promising efficiency for ammonia synthesis, while achieving high catalytic activity and selectivity remains challenging. In this Minireview, we summarize recent electrocatalytic performances of denitrification with selective formation to ammonia in terms of proposed active sites and reaction mechanisms. Additionally, we discuss the common issues in the state-of-the-art experimental tests and highlight the breakthroughs via computational screening of electrode materials. The aim of this is to steer the future research directions in the field, which is aiming for an optimal catalytic system with higher activity and selectivity for electrocatalytic denitrification.

中文翻译:

超越使用氮气作为来源的电化学合成氨的进展

电催化还原二氮已成为氨合成的新策略。尽管对环境无害且节能,但由于在室温和大气压下激活惰性 N≡N 键的挑战,它存在转化效率低和氨产率低的问题。因此,研究人员提议将含氮物质(一类空气和水污染物)减少为有价值的氨。尽管在很大程度上仍未得到充分探索,但这种替代方法在氨合成方面显示出有前景的效率,同时实现高催化活性和选择性仍然具有挑战性。在这篇 Minireview 中,我们根据提议的活性位点和反应机制总结了最近选择性形成氨的反硝化电催化性能。此外,通过电极材料的计算筛选。这样做的目的是引导该领域未来的研究方向,旨在为电催化脱硝提供具有更高活性和选择性的最佳催化体系。
更新日期:2021-08-27
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