Recent advancement of non-noble metal catalysts for hydrogen production by NH3 decomposition

Bhanupratap Singh Solanki, Hoyoung Lim, Seok Jun Yoon, Hyung Chul Ham, Han Saem Park, Ha Eun Lee and See Hoon Lee

Renewable and Sustainable Energy Reviews, 2025, vol. 207, issue C

Abstract: Paradigm transition towards green, clean and sustainable energy sources to reduce the global carbon footprint propelling the current energy market towards hydrogen economy due to the much reliable, carbon neutral and near zero emission properties though safe transportation and storage of hydrogen is a big challenge. Owing to its remarkable hydrogen content, easy storage and safe handling, NH3 is the most suitable hydrogen carrier. Considering the energy potential of NH3, this review, focus on the thermocatalytic decomposition of NH3 for COx free production of H2 on non-noble metal catalysts. Taking cost effectivity and scalability into account, recent development in design of inexpensive catalysts with metal components having less global warming potential are covered. A comprehensive survey and comparative assessment of recent (particularly post 2014) Co, Ni, Fe, Mo, metal carbides, imides, bimetallic and multimetallic catalysts with established benchmark catalysts is presented here. Effect of various promoters and supports on electronic properties, textural properties, reducibility and surface characteristics of catalyst is extensively reviewed. Mutual bimetallic synergism, novel synthetic approaches and reaction mechanism is also highlighted considering their role in successful execution of sustainable ammonia decomposition. A brief description of deactivation challenge of catalysts and measure taken to counter it is also given. Special emphasis is given to the catalysts which have potential of decomposition of ammonia at low temperature (<450 °C). Finally, summary and scope along with brief economic evaluation is presented targeting further development in large-scale production of H2 from NH3.

Keywords: Clean H2; NH3 decomposition; Heterogeneous catalysis; Near-zero emission; Energy transition (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.rser.2024.114974

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