Abstract:
paper reports the fabrication of hematite (alpha-Fe2O3) and its mixed oxides (alpha-Fe2-xO3Cux, alpha-Fe2-xO3Cox, alpha-Fe2-xO3Nix) by hydrothermal technique without using any surface directing agent or capping agent. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The synthesized catalysts were screening for epoxidation of cyclohexene and trans-stilbene. Cu based mixed oxide shows almost two-fold higher conversion than pure hematite. Although we have not got significant conversion, but the epoxidation of the above two substrate over the hematite and its mixed oxide is new-fangled. (C) 2012 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.