Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1276705 | International Journal of Hydrogen Energy | 2010 | 8 Pages |
Co–Cu–B, as a catalyst toward hydrolysis of sodium borohydride solution, has been prepared through chemical reduction of metal salts, CoCl2·6H2O and CuCl2, by an alkaline solution composed of 7.5wt% NaBH4 and 7.5wt% NaOH. The effects of Co/Cu molar ratio, calcination temperature, NaOH and NaBH4 concentration and reaction temperature on catalytic activity of Co–Cu–B for hydrogen generation from alkaline NaBH4 solution have been studied. X-ray diffraction (XRD), scanning electron microscope (SEM) and Nitrogen adsorption–desorption isotherm have been employed to understand the results. The Co–Cu–B catalyst with a Co/Cu molar ratio of 3:1 and calcinated at 400 °C showed the best catalytic activity at ambient temperature. The activation energy of this catalytic reaction is calculated to be 49.6 kJ mol−1.