Critical downstream catalytic processes for an NH3 economy

Keshia Saradima Indriadi, Yankun Du, Qian He and Ning Yan

Applied Energy, 2025, vol. 393, issue C, No S0306261925008293

Abstract: Ammonia (NH3) is among the most promising green energy carriers, due to its high energy density, ease of liquification, and existing know-hows for its large-scale synthesis, transportation, and storage. However, to effectively harness NH3 as an energy source, many downstream processes still need further development. This review highlights the barriers and challenges in two of the critical catalytic processes, namely ammonia decomposition and catalytic ammonia combustion. In the first part, we discuss the challenges of obtaining high purity and high-pressure hydrogen via ammonia decomposition in various application scenarios. Then, we discuss the potential roles of ammonia decomposition and catalytic ammonia combustion in the processes where NH3 is directly used as a combustion fuel. Understanding and further optimizing these catalytic processes are crucial to facilitate an NH3 economy, thereby fostering a more environmentally conscious energy landscape.

Keywords: ammonia decomposition; ammonia combustion; hydrogen energy; catalysis (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.apenergy.2025.126099

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