Chemical manufacturing utilizing renewable resources and energy presents a promising avenue toward sustainability and carbon neutrality. Electrocatalytic upgrading of nitrogen oxides (NO_x) into nitrogenous chemicals is a potential strategy for synthesizing chemicals and mitigating NO_x pollution. However, this approach is currently hindered by low selectivity and efficiency, limited reaction pathways, and economic challenges, primarily due to the development of suboptimal electrocatalytic systems for NO_x upgrading. In this review, we focus on electrocatalytic systems for NO_x upgrading and discuss newly developed components, including catalysts, solvents, electrolysers, and upstream/downstream processes. These advancements enable recent developments in NO_x upgrading reactions that yield various products, including green ammonia (NH₃), dinitrogen (N₂), nitrogenous chemicals beyond NH₃ and N₂ (e.g., hydroxylamine and hydrazine), and organonitrogen compunds. Additionally, we provide an outlook to highlight future directions in the emerging field of novel electrocatalytic systems for NO_x upgrading.

中文翻译：

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用于 NOx 提纯的电催化系统


利用可再生资源和能源的化学制造为实现可持续性和碳中和提供了一条充满希望的道路。将氮氧化物 （NO_x） 电催化升级为含氮化学品是合成化学品和减轻 NO_x 污染的潜在策略。然而，这种方法目前受到低选择性和效率、有限的反应途径和经济挑战的阻碍，主要是由于开发了用于 NO_x 升级的次优电催化系统。在这篇综述中，我们重点介绍了用于 NO_x 升级的电催化系统，并讨论了新开发的组件，包括催化剂、溶剂、电解槽和上游/下游工艺。这些进步使 NO_x 提质反应的最新发展成为可能，从而产生各种产物，包括绿氨 （NH₃）、二氮 （N₂）、NH₃ 和 N₂ 以外的含氮化学品（例如、羟胺和肼）和有机氮成分。此外，我们还提供了展望，以突出用于 NO_x 升级的新型电催化系统新兴领域的未来方向。