The development of high-performance Ni catalysts including the formation and stabilization of active Ni nanoparticles with high surface areas by increasing their metal dispersion at the high metal loading have been major issues in the design of a compact reformer for hydrogen production. Herein, we first report a facile method based on the sequential melt infiltration process for creating highly dispersed Ni nanoparticles (~7.5 nm) incorporated into alumina support (Ni/Al₂O₃) with high Ni load (45 wt%). They showed much higher hydrogen productivity and reaction rate than that of the incipient wet-impregnated Ni catalyst and commercial Ni catalyst as well as good thermal stability in steam-methane reforming under harsh conditions.

高性能镍催化剂的开发，包括通过增加高金属负载下的金属分散来形成和稳定具有高表面积的活性镍纳米颗粒，一直是设计用于制氢的紧凑型重整器的主要问题。在本文中，我们首先报告了一种基于顺序熔体渗透过程的简便方法，用于产生高度分散的 Ni 纳米粒子（~7.5 nm）并结合到具有高 Ni 负载（45 wt%）的氧化铝载体（Ni/Al ₂ O ₃）中。它们显示出比初始湿浸渍镍催化剂和商业镍催化剂更高的氢气生产率和反应速率，以及在恶劣条件下蒸汽-甲烷重整中良好的热稳定性。