摘要： We report the preparation of Ni3B and carbon-supported Ni3B (denoted as Ni3B/C) nanoparticles, and their catalytic performance for hydrogen generation from hydrolytic dehydrogenation of ammonia borane (NH3BH3, AB). Ni3B and Ni3B/C were prepared via a chemical reduction and crystallization in tetraethylene glycol solution. The obtained Ni3B catalysts are in well-defined crystalline state and Ni3B/C catalysts have a high dispersion in the carbon. The hydrogen generation measurement shows that the carbon-supported Ni3B presents enhanced catalyst activity during hydrolytic dehydrogenation of AB. Among the as-prepared Ni3B/C catalysts, Ni3B/C with 34.25 wt% Ni3B loading displays the best catalytic activity, delivering a high hydrogen release rate of 1168 mL min−1 g−1 and the lower activation energy of 46.27 kJ mol−1. The kinetic results show that the hydrolysis is a first-order reaction in catalyst concentration, while it is a zero-order in AB concentration. Furthermore, the Ni3B/C is a recyclable catalyst under mild reaction conditions, indicating that the carbon-supported Ni3B is a promising catalyst for AB hydrolytic dehydrogenation. •Ni3B and Ni3B/C were prepared via a direct solution method.•Their catalytic performance for hydrolysis of ammonia borane was investigated.•Ni3B/C with 34.25 wt% Ni3B loading exhibited the highest catalytic activity. 出版者： Kidlington: Elsevier Ltd 出版日期： 2014-04-24 出處： International Journal of Hydrogen Energy, 2014-04, Vol.39 (13), p.6987-6994 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2014 Hydrogen Energy Publications, LLC. 版權： 2015 INIST-CNRS 識別號： ISSN: 0360-3199 識別號： EISSN: 1879-3487 識別號： DOI: 10.1016/j.ijhydene.2014.02.122 識別號： CODEN: IJHEDX
