Role of mesoporous Zr based KIT-6 silicas for catalytic decomposition application at mild conditions

Abstract

AbstractKIT-6 silicas were synthesized using pluronic P123 as surfactant and n-butanol as co-solvent in mild acidic condition. Different amounts of Zr (zirconium) were loaded to la3d mesoporous silica KIT-6. The syntheses were performed by hydrothermal method and the effect of metal on KIT-6 was investigated by SEM, TEM, FT-IR, NH3-TPD, H2-TPR, ICP-OES, N2adsorption-desorption and XRD methods. The results showed that Zr ions were well incorporated into the KIT-6 silica. Zr has also effective and excellent performance for H2O2decomposition reaction. The results also showed that Zr based KIT-6 catalysts were stable and reusability materials over H2O2decomposition tests. The all catalysts presented mesoporous structure with BET results (~ 768 m2/g surface area) and high activity (~ 0.91) at mild conditions. H2O2is an effective and environmentally friendly material and many studies were carried out to develop new and efficient materials in recent years. Mesoporous silicas especially KIT-6 is one of them but there are few studies about it and its derivatives.