A comprehensive study on the synthesis, characterization and mathematical modeling of nanostructured Co-based catalysts using different support materials for AB hydrolysis

The present work includes the synthesis of aluminum oxide (Al₂O₃), multi-walled carbon nanotube (MWCNT), and Eupergit CM-supported Co-based nanoparticles (Co–Fe–B and Co–Mn–B), and the investigation of their hydrolytic efficiency in H₂ generation from the catalytic hydrolysis of ammonia borane (NH₃BH₃). Among the supported catalysts, Co–Fe–B/Eupergit CM exhibited the highest H₂ generation rate as 4539 mLmin⁻¹g_catalyst⁻¹ compared to Co–Fe–B/Al₂O₃ and Co–Fe–B/MWCNT, which exhibited 4373 mLmin⁻¹g_catalyst⁻¹ and 3294 mLmin⁻¹g_catalyst⁻¹, respectively. When Co–Mn–B/ Eupergit CM was used instead of Co–Fe–B/ Eupergit CM, a significant increase in the highest HGR (19.422 mLmin⁻¹g_catalyst⁻¹) was found. Moreover, turnover frequency (TOF) value was calculated as 318 h⁻¹ and 646 h⁻¹ for Co–Fe–B/Eupergit CM and Co–Mn–B/Eupergit CM, respectively.