عنوان	DABCO tribromide immobilized on magnetic nanoparticle as a recyclable catalyst for the chemoselective oxidation of sulfide using H2O2 under metal- and solvent-free conditions
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Magnetic nanoparticles; 1,4-Diazabicyclo[2.2.2] octane tribromide; Nanocatalyst; Hydrogen peroxide; Sulfides; Sulfoxides
چکیده	Magnetic nanoparticle-supported 1,4-diazabicyclo[2.2.2] octane tribromide (MNPs-DABCO tribromide) as a bromine source was readily prepared and characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and vibrating sample magnetometry (VSM) techniques. The catalytic activity of MNPs-DABCO tribromide was investigated in the chemoselective oxidation of sulfides to sulfoxides using 30% H2O2 as an oxidant at room temperature under solvent-free conditions. The heterogeneous catalyst could be recovered easily and reused 15 times without significant loss of its catalytic activity. (C) 2013 Elsevier B.V. All rights reserved.
پژوهشگران	امین رستمی (نفر اول)، یحی نواسی (نفر دوم)، داریوش مرادی (نفر سوم)، آرش قربانی چقامارانی (نفر چهارم)