Affordable synthetic ammonia (NH₃) enables the production of nearly half of the food we eat and is emerging as a renewable energy carrier. Sodium‐promoted chemical looping NH₃ synthesis at atmospheric pressure using manganese (Mn) is here demonstrated. The looping process may be advantageous when inexpensive renewable hydrogen from electrolysis is available. Avoiding the high pressure of the Haber‐Bosch process by chemical looping using earth‐abundant materials may reduce capital cost, facilitate intermittent operation, and allow operation in geographic areas where infrastructure is less sophisticated. At this early stage, the data suggest that 0.28 m³ of a 50 % porosity solid Mn bed may suffice to produce 100 kg NH₃ per day by chemical looping, with abundant opportunities for improvement.

中文翻译：

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锰的化学环合成在大气压下合成氨：钠作为促进剂

负担得起的合成氨（NH ₃）可以生产我们所食用食物的近一半，并且正在成为可再生能源的载体。本文证明了在大气压下使用锰（Mn）进行钠促进的化学环化NH ₃合成。当可获得廉价的来自电解的可再生氢时，循环过程可能是有利的。通过使用富含地球物质的材料进行化学循环来避免Haber-Bosch过程的高压，可以降低投资成本，促进间歇性运行，并允许在基础设施不太复杂的地理区域中运行。在此早期阶段，数据表明，孔隙率为50％的固体Mn床的0.28 m ³足以生产100 kg NH _3。 每天通过化学循环进行，具有丰富的改进机会。