文献类型：期刊文献

英文题名：Ni-Fe-B catalysts for NaBH4 hydrolysis

作者：Nie, M.[1]; Zou, Y.C.[1]; Huang, Y.M.[1]; Wang, J.Q.[2]

机构：[1] Department of Chemistry, East China University of Science and Technology, Ministry of Education, Shanghai 200237, China; [2] Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China

年份：2012

卷号：37

期号：2

起止页码：1568

外文期刊名：International Journal of Hydrogen Energy

收录：EI(收录号：20120314685282)

语种：英文

外文关键词：Activation energy - Nickel compounds - Sodium hydroxide - Catalyst activity - Hydrolysis - Chlorine compounds - Hydrogen production - Iron compounds

摘要：A series of Ni-Fe-B catalysts with different Fe/(Fe + Ni) molar ratios, used for the hydrolysis of NaBH4, were prepared by chemical reduction of NiCl2 and FeCl3 mixed solution with NaBH4. The measurements revealed that the catalysts with the molar ratio of Fe/(Fe + Ni) (30%) exhibited the highest catalytic activity, and the optimal reduction temperature is 348 K. In addition, the effects of the concentration of NaBH 4, NaOH and the hydrolytic temperature of NaBH4 were discussed in detail. The results show that the reaction rate of hydrolysis first rises up and then goes down subsequently with the increase of NaBH4 concentration, as well as the concentration of NaOH. The activation energy of the hydrolysis for Ni-Fe-B catalysts is fitted to 57 kJ/mol. The maximum value of hydrogen generation is 2910 ml/(min g) at 298 K. ? 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.