Abstract
In this research work, a novel molybdenum N4-type Schiff base complex anchored covalently on magnetite nanoparticles and characterized perfectly using physico-chemical techniques and it was applied for oxidation of sulfides. The effects of solvent, reaction temperature and amount of catalysts by 30% aqueous H2O2 as environmental friendly oxidant on oxidation catalytic process were optimized. The best results in solvent-free condition was obtained. The catalyst was tested for oxidation of thioanisole, Diphenyl sulfide, Benzyl phenyl sulfide, dipropyl sulfide, dibutyl sulfide, dimethyl sulfide, bis(4-hydroxyphenyl) sulfide, diallyl sulfide and benzothiophene. The presented nanocatalyst is so effective for selective oxidation of thioanisole, dimethyl sulfide, dibutyl sulfide and diallyl sulfide with a >99% conversion, and excellent turnover frequency (93,000h−1<) in shortest time (5min). The magnetic nanocatalyst was easily recovered by using an external magnetic field and employed at least six successive times without significant decreasing in conversion.
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