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Dramatic enhancement of catalytic activity over transition metal substituted hematite
Gajendra K. Pradhan,K.M. Parida 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.5
This paper reports the fabrication of hematite (a-Fe2O3) and its mixed oxides (a-Fe2-xO3Cux, a-Fe2-xO3Cox, a-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.