JOURNAL OF THE ENERGY INSTITUTE, vol.89, no.4, pp.617-626, 2016 (SCI-Expanded)
Hydrogen is a clean energy carrier and is expected to be one of the main energy sources in the 21st century. The basic aim of this study is to develop a feasible new catalyst system for the hydrogen generation by catalytic hydrolysis of NaBH4. The method is an alternative approach for the hydrogen production with metal catalysts. Ni-Co bimetallic complex catalysts with different Co-Ni contents were derived from 4-4'-methylene bis (2,6-diethyl)aniline-3,5-di-tert-butylsalisilaldimin ligand and their catalytic performances were investigated with hydrogen generation by catalytic hydrolysis of NaBH4. Experimental results showed that the Co-Ni contained catalysts exhibited much higher activity than the monometallic complex catalyst. The optimal mixture percentage of Co-Ni complex catalyst was 80:20. It was found that a combination of 2.5 wt% NaBH4 solution concentration and 5 wt% NaOH yields the highest performance for the hydrogen generation. The catalysts were characterized by XRD, FT-IR and SEM techniques. (C) 2015 Energy Institute. Published by Elsevier Ltd. All rights reserved.