Ru-based catalysts for hydrogenation of N-ethylcarbazole: Progress and prospects

• Published in: Fuel (Guildford) 2024-03, Vol.360, p.130605, Article 130605
• Main Authors: Zhao, Xiaohan, Kong, Xianglong, Li, Gaofu, Zhao, Ying, Jia, Zhuoming, He, Fei, Yang, Piaoping, Ge, Kun, Zhang, Milin, Liu, Zhiliang
• Format: Article
• Language: English
• Subjects: Hydrogenation mechanism; NEC hydrogen storage; Ru-based catalysts; Synthetic method
• ISSN: 0016-2361; 1873-7153
• DOI: 10.1016/j.fuel.2023.130605

•This review systematically summarizes the up-to-date advances of Ru based catalysts from typical structures, main synthesis methods and hydrogenation applications of NEC.•The NEC hydrogen storage mechanism of Ru-based catalysts, and relationship between structures and catalytic performance are deeply discussed.•This review paves the way for future research and applications of Ru-based catalysts for hydrogen storage. N-ethylcarbazole (NEC) hydrogen storage is a very effective strategy to realize large-scale safe storage of hydrogen. Therefore, the development of high-efficiency catalysts is crucial to promote NEC hydrogen uptake reaction. Among numerous catalysts, precious metal ruthenium (Ru) has been demonstrated to be a promising catalyst for NEC hydrogenation reduction because of its excellent catalytic activity and good stability. Therefore, this review first summarizes typical structures and synthesis methods of Ru-based catalysts. Then, their latest progress and the catalytic mechanism in NEC hydrogenation is discussed in detail. At last, a few optimistic outlooks and potential challenges are highlighted to guide future research and practical applications of Ru-based catalysts in catalytic NEC hydrogenation.