Continuous-Flow Synthesis of Supported Magnetic Iron Oxide Nanoparticles for Efficient Isoeugenol Conversion into Vanillin

ChemSusChem. 2018 Jan 23;11(2):389-396. doi: 10.1002/cssc.201701884. Epub 2017 Dec 28.

Abstract

This work presents the synthesis of iron oxide nanocatalysts supported on mesoporous Al-SBA-15 by using a continuous-flow setup. The magnetic nanomaterials were tested as catalysts in the oxidative disruption of isoeugenol by using hydrogen peroxide as a green oxidant, featuring high activities (63-88 % conversion) and good selectivities to vanillin (44-68 %). The catalytic systems exhibited good magnetic properties when synthesized under continuous-flow conditions at temperatures not exceeding 190 °C. The use of microwave irradiation significantly reduced times of reaction drastically but exerted negative effects on catalyst reusability.

Keywords: iron oxide; isoeugenol; nanoparticles; oxidation; vanillin.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aluminum Silicates / chemistry
  • Benzaldehydes / chemistry*
  • Catalysis
  • Eugenol / analogs & derivatives*
  • Eugenol / chemistry
  • Ferric Compounds / chemistry*
  • Green Chemistry Technology
  • Hot Temperature
  • Hydrogen Peroxide / chemistry
  • Magnetics*
  • Metal Nanoparticles / chemistry*
  • Microscopy, Electron, Transmission
  • Microwaves
  • Oxidation-Reduction
  • Porosity
  • Silicon Dioxide / chemistry
  • Thermogravimetry
  • X-Ray Diffraction

Substances

  • Aluminum Silicates
  • Benzaldehydes
  • Ferric Compounds
  • SBA-15
  • ferric oxide
  • aluminosilicate
  • Eugenol
  • isoeugenol
  • Silicon Dioxide
  • Hydrogen Peroxide
  • vanillin