In this paper, manganese catalysts supported on the HMS with different loading of Mn2+ were prepared by impregnation method. For catalyst preparation, different salts of manganese (nitrate, acetate, sulphate, chloride) were used. These samples were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Thermo gravimetric (TG), and Fourier transforms Infrared (FT-IR) techniques. The catalytic activities of the supported Mn/HMS catalysts were evaluated in the oxidation of cyclohexane in the liquid phase using tert-butylhydroperoxide (TBHP) as an oxidant. It has been observed that the catalyst prepared from manganese nitrate has the highest activity.
