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Hydrogen generation utilizing alkaline sodium borohydride solution and supported cobalt catalyst
Authors:Wei Ye  Huamin Zhang  Dongyan Xu  Li Ma  Baolian Yi
Affiliation:1. Lab of PEMFC Key Materials and Technologies, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
Abstract:Supported Co catalysts with different supports were prepared for hydrogen generation (HG) from catalytic hydrolysis of alkaline sodium borohydride solution. As a result, we found that a γ-Al2O3 supported Co catalyst was very effective because of its special structure. A maximum HG rate of 220 mL min−1 g−1 catalyst and approximately 100% efficiency at 303 K were achieved using a Co/γ-Al2O3 catalyst containing 9 wt.% Co. The catalyst has quick response and good durability to the hydrolysis of alkaline NaBH4 solution. It is feasible to use this catalyst in hydrogen generators with stabilized NaBH4 solutions to provide on-site hydrogen with desired rate for mobile applications, such as proton exchange membrane fuel cell (PEMFC) systems.
Keywords:Hydrogen generation  Sodium borohydride  Supported Co catalyst  Hydrolysis
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