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Synthesis, characterization and catalytic activity of supported vanadium Schiff base complex as a magnetically recoverable nanocatalyst in epoxidation of alkenes and oxidation of sulfides

Bagherzadeh, M ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jorganchem.2019.06.036
  3. Publisher: Elsevier B.V , 2019
  4. Abstract:
  5. A new magnetically separable nanocatalyst was successfully synthesized by immobilizing of vanadyl acetylacetonate complex, [VO(acac)2], onto silica coated magnetite nanoparticles previously functionalized with 3-aminopropyltriethoxysilane (3-APTES) and reacted by 5-bromosalicylaldehyde to form Schiff base moiety. The obtained nanocatalyst was characterized by elemental analysis (CHN), FT-IR spectroscopy, Powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), inductively coupled plasma optical emission spectrometry (ICP-OES) and thermogravimetric analysis (TGA). Eventually, the resulting nanoparticles were used as catalyst for epoxidation of alkenes and oxidation of sulfides using tert-butyl hydroperoxide (TBHP) as an oxidant. © 2019
  6. Keywords:
  7. Alkenes ; Magnetic nanocatalyst ; Oxidation ; Sulfides ; Vanadyl acetylacetonate ; Catalyst activity ; Catalytic oxidation ; Complexation ; Enamels ; Field emission microscopes ; Inductively coupled plasma ; Magnetite ; Magnetite nanoparticles ; Nanocatalysts ; Olefins ; Optical emission spectroscopy ; Silica ; Spectrometry ; Sulfur compounds ; Synthesis (chemical) ; Thermogravimetric analysis ; 3-aminopropyltriethoxysilane ; Field emission scanning electron microscopy ; Inductively coupled plasma-optical emission spectrometry ; Silica coated magnetite nanoparticles ; Vanadium compounds
  8. Source: Journal of Organometallic Chemistry ; Volume 897 , 2019 , Pages 200-206 ; 0022328X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0022328X19302839