Abstract:
The transition metal-titanosilicate catalysts (V/TS-1 and V/Ti-MCA) were successfully synthesized by hydrothermal treatment followed by impregnation method. All prepared catalysts were characterized by X-ray powder diffraction (XRD), DR-UV spectroscopy, N2 adsorption-desorption, scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) and inductively coupled plasma-optical emission spectrometry (ICP-OES). After vanadium addition, the structural of two catalysts were still similar to parent materials confirming by XRD and SEM-EDX. Additionally, the vanadium particles in catalyst were vanadium oxide (V₂O₅) phase proved by DR-UV technique. The catalytic activity of the prepared catalysts was evaluated in the oxidation reaction of benzene and naphthalene with hydrogen peroxide as the oxidizing agent. From the results, among all catalysts, V/Ti-MCA provided the best catalytic efficiency with the naphthalene conversion as 34.0% and the yield of phenol as 14.0%.
Description:
In Partial Fulfillment for the Degree of Bachelor of Science, Department of Chemistry, Faculty of Science, Chulalongkorn University Academic Year 2016
