Loading...

Nanoparticle supported, magnetically separable manganese porphyrin as an efficient retrievable nanocatalyst in hydrocarbon oxidation reactions

Bagherzadeh, M ; Sharif University of Technology

1036 Viewed
  1. Type of Document: Article
  2. DOI: 10.1039/c6ra02123a
  3. Publisher: Royal Society of Chemistry
  4. Abstract:
  5. A manganese porphyrin, meso-tetrakis(pentafluorophenyl)porphyrinato manganese(iii) acetate, Mn(TPFPP)OAc, was immobilized on silica-coated magnetic Fe3O4 nanoparticles functionalized with 3-aminopropyltriethoxysilane (APTS) through the amino propyl linkage using a grafting process in toluene solvent. This enabled the covalent immobilization of Mn(iii) porphyrin via an aromatic nucleophilic substitution reaction, to afford the Fe3O4@SiO2-NH2@MnPor catalyst. The resulting nanoparticles were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), FT-IR spectroscopy, UV-Vis spectroscopy, elemental analysis (CHN), atomic absorption spectroscopy (AAS), and vibrating sample magnetometry (VSM). The immobilized manganese porphyrin was applied as an efficient and retrievable heterogeneous nanocatalyst in alkane hydroxylation and alkene epoxidation. Leaching and recycling experiments revealed that the prepared nanocatalyst can be recovered, and reused several times, without loss of activity and magnetic properties
  6. Keywords:
  7. Absorption spectroscopy ; Atomic absorption spectrometry ; Grafting (chemical) ; Hydrocarbons ; Nanomagnetics ; Nanoparticles ; Organic solvents ; Porphyrins ; Scanning electron microscopy ; Substitution reactions ; Ultraviolet visible spectroscopy ; X- ray powder diffraction ; 3- aminopropyltriethoxysilane ; Aromatic nucleophilic substitution reaction ; Atomic absorption spectroscopy ; Covalent immobilization ; Hydrocarbon oxidation ; Magnetically separable ; Recycling experiments ; Vibrating sample magnetometry ; Manganese
  8. Source: RSC Advances ; Volume 6, Issue 47 , 2016 , Pages 41551-41560 ; 20462069 (ISSN)
  9. URL: http://pubs.rsc.org/en/Content/ArticleLanding/2016/RA/C6RA02123A#!divAbstract