Synthesis and characterisation of various Co-B based catalyst for light weight complex hydride hydrolysis

With superior properties light weight complex hydrides are attractive alternative to conventional hydrogen storage systems. Hydrolysis kinetics of complex hydrides, could be improved by catalyst. Co-B based catalysts are produced from various cobalt and boron source by six kind of methods and then structural properties of Co-B based catalysts are characterized. Generating H2 from NaBH4, member of light weight complex hydrides, two catalyst prepared with sol-gel and co-precipitation techniques were selected. The optimum hydrolysis reaction conditions are determined.The catalytic hydrolysis reaction order is zero order for useage of catalysts prepared by sol-gel catalyst (122.7 m2/g) activation energy is 51.83 kJ/mol and impregnation catalyst (8.46 m2/g) is 75.07 kJ/mol. Consequently, the Co-B based catalyst, synthesis by sol-gel method with CoCl2 and B2O3 sources, is suggested for catalytic NaBH4 hydrolysis.