期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 491, 期 1-2, 页码 359-365出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2009.10.183
关键词
Hydrogen generation; Sodium borohydride; Electroless plating; Dynamic template; Porous Fe-Co-B catalyst
资金
- National High-Tech R&D Program of China [2006AA05Z104]
- National Basic Research Program of China [2010CB631305]
- Hundred Talents Project of Chinese Academy of Sciences (ACS)
- CAS Knowledge Innovation Program [KGCXZ-YW-342]
By using a modified electroless plating method, a porous Fe-Co-B catalyst is prepared on Ni foam support in order to generate hydrogen from an alkaline sodium borohydride (NaBH4) solution. In this process, hydrogen bubbles originating from electroless deposition function as a dynamic template to form the porous catalyst. The effects of NaBH4, NaOH concentration and reaction temperature on the hydrolysis reaction kinetics are investigated. it has been found that an average hydrogen generation rate of 221 min(-1) g(-1) (Fe-Co-B) is achieved in a 15 wt.% NaBH4 and 5 wt.% NaOH solution at 30 degrees C and the apparent activation energy of the hydrolysis reaction is determined to be 27 kJ mol(-1). The catalyst exhibits a high activity due to its porous structure, which facilitates the access of reactants to the surface active sites of catalyst. (C) 2009 Elsevier B.V. All rights reserved.
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