Catalytic Hydrolysis of Ammonia Borane for Hydrogen Production
Qilu Yao , Hongxia Du , Zhang-Hui Lu
Progress in Chemistry ›› 2020, Vol. 32 ›› Issue (12) : 1930 -1951.
Hydrogen has attracted much attention as a globally accepted clean energy carrier. Currently, the search of safe and efficient hydrogen storage materials is one of the most difficult challenges for the transformation to hydrogen powered society as a long-term solution for a secure energy future. Ammonia borane(NH3BH3, AB) has been considered to be a promising chemical hydrogen storage material due to its high hydrogen capacity(19.6 wt%), high volumetric hydrogen density(0.145 kgH2/L), and remarkable advantages in hydrogen storage and dehydrogenation performance. Hydrogen stored in ammonia borane can be released via pyrolysis, methanolysis, and hydrolysis routes. Among them, hydrolysis of ammonia borane can be easily controlled and without CO produced(easy to poison the catalyst) in the presence of an appropriate catalyst under mild conditions, which seems to be the most safe, effective, and convenient route for hydrogen storage applications. In this review, the properties and synthesis of ammonia borane are briefly introduced. The mechanism of hydrogen production from ammonia borane is described. Meanwhile, the research progress in catalytic hydrolytic dehydrogenation of ammonia borane for chemical storage is significantly reviewed. Moreover, the promoting effect of alkali for this hydrolysis reaction is concisely analyzed and the recovery of hydrolysate is also discussed.
1 Introduction
2 Properties and synthesis of ammonia borane
2.1 Properties of ammonia borane
2.2 Synthesis of ammonia borane
3 Mechanism of catalytic ammonia borane hydrolysis
4 Metal catalysts for the hydrolysis of ammonia borane
4.1 Noble metal catalysts
4.2 Non-noble metal catalysts
4.3 Synergistic metal catalysts
4.4 Other catalysts
5 Promoting effect of alkali on catalytic ammonia borane hydrolysis
6 Regeneration of ammonia borane
7 Conclusion
chemical hydrogen storage material / ammonia borane / hydrolysis / hydrogen production / catalyst
the National Natural Science Foundation of China(No. 21763012)
the National Natural Science Foundation of China(21802056)
the Natural Science Foundation of Jiangxi Province of China(No. 20192BAB203009)
and the Sponsored Program for Cultivating Youths of Outstanding Ability in Jiangxi Normal
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