Efficiency of TiO2-supported Ni-Mo-Ru-B catalyst for hydrogen production from potassium borohydride hydrolysis

Abstract

In this study, TiO2-supported Ni-Mo-Ru-B (TiO2@Ni-Mo-Ru-B) catalyst was synthesized by chemical reduction method for hydrogen production from the hydrolysis of potassium borohydride (KBH4) solution. The characterizations of the synthesized catalysts were carried out with BET, XRD, and SEM. In hydrolysis experiments, the effects of parameters such as KOH concentration, KBH4 concentration, catalyst amount, metal/TiO2 ratio, and temperature on hydrogen production rate were investigated. The optimum metal/TiO2 ratio was determined as 10% and the hydrogen production rate of the catalyst at 30 degrees C was calculated as 2410.28 mL/min.g(cat). In addition, the reaction rate order was found to be 0.8 (nth order); accordingly, the value of the activation energy was obtained from the Arrhenius equation as 51.807 kJ/mol.