Restructured V-MCM-41 with non-leaching vanadium and improved hydrothermal stability prepared by secondary synthesis

摘要

Restructured V-MCM-41 prepared using parent V-MCM-41 (calcined form) via secondary synthesis possessing non-leaching vanadium in framework shows remarkable hydrothermal stability. Samples were characterized using various techniques such as XRD, N_2-sorption, UV-visible, FT-IR, TG-DTA and ~(51)V MAS NMR. Activity of parent and restructured V-MCM-41 were compare in the oxidation of toluene and 1-naphthol in the presence of aqueous H_2O_2. Conversion of toluene and 1-naphthol over reused restructured V-MCM-41 are 2 fold more than that of parent V-MCM-41 with similar Si/V ratio.