Potential Economic Feasibility of Direct Electrochemical Nitrogen Reduction as a Route to Ammonia
Potential Economic Feasibility of Direct Electrochemical Nitrogen Reduction as a Route to Ammonia
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DOI：
10.26434/chemrxiv.9894437.v2
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发表时间：
2019-10
影响因子：
8.4
通讯作者：
G. Hochman;A. Goldman;F. Felder;J. Mayer;Alexander J. M. Miller;Patrick L. Holland;Leo A. Goldman;Patricia Manocha;Ze Song;Saketh Aleti
中科院分区：
文献类型：
--
作者：
G. Hochman;A. Goldman;F. Felder;J. Mayer;Alexander J. M. Miller;Patrick L. Holland;Leo A. Goldman;Patricia Manocha;Ze Song;Saketh Aleti
哈伯-博世合成法通过氢气和氮气生产氨，这是一种全球重要的能源密集型工艺，使用煤或天然气作为燃料和氢源。使用可再生能源从氮和水直接电化学合成氨提供了哈伯-博世工艺的替代方案，该工艺可持续且对环境无害。此外，直接电化学氮还原技术的不同生产结构提出了氨工业的供应链替代方案以及电网负载均衡的方法。这种从二氮生产氨的替代路线不需要像哈伯-博世工艺那样大量的资本投资，也不需要获得化石燃料供应。我们表明，在某些情况下，在未来电催化剂可实现的能源效率水平下，与基于哈伯-博世的氨生产相比，直接氮还原将具有经济竞争力或优势。
The Haber-Bosch synthesis produces ammonia from hydrogen and nitrogen gases in a globally important energy-intensive process that uses coal or natural gas as a fuel and as a hydrogen source. Direct electrochemical ammonia synthesis from nitrogen and water using renewable energy sources presents an alternative to the Haber-Bosch process that would be sustainable and environmentally benign. Additionally, the different production structure of direct electrochemical nitrogen reduction technology suggests a supply chain alternative to the ammonia industry, and a method for load-leveling of the electrical grid. This alternative route to ammonia from dinitrogen would not require the same large capital investments as does the Haber-Bosch process, nor would it require access to a fossil fuel supply. We show that under certain scenarios, at feasibly achievable levels of energy efficiency with a future electrocatalyst, direct nitrogen reduction would be economically competitive or advantageous compared with Haber-Bosch-based ammonia production.