Investigation of CoB/SBA-15 Catalyst for Efficient Hydrogen Generation via Sodium Borohydride Hydrolysis

Graphical Co−B/SBA-15 catalysts are prepared through an impregnation chemical reduction process. The hydrogen hydrolysis performance is meticulously investigated using the water displacement method. Through detailed experimental procedures and comprehensive analysis, the findings highlight the significant potential of Co−B/SBA-15 catalysts in hydrogen production applications, emphasizing the importance of catalyst structure and preparation methods on their performance metrics. Hydrolysis of NaBH 4 has garnered great concern in the production of hydrogen. Four different cobalt loadings (5 wt.%, 10 wt.%, 12.5 wt.% and 15 wt.%) were impregnated on SBA-15 molecular sieve. The effect of Co loading on the catalytic performance of the CoB/SBA-15 catalysts for NaBH 4 hydrolysis using the drainage method was studied. Characterizations using XRD, SEM, XPS, and N 2 adsorption-desorption were analytically conducted to examine the physiochemical properties of the CoB/SBA-15 catalyst. The catalytic activity test revealed that the optimum Co loading was 10 wt.% at which the maximum rate of hydrogen production was 153.0 mL/min⋅gcat, higher than the other samples. In addition, the effect of Co loaded, catalyst amount, and temperature were examined. Furthermore, the stability of the catalyst was maintained after five cycles. Cobalt-based catalysts are a promising catalytic system for hydrogen generation by hydrolysis of NaBH 4 .