Oxoperoxo tungsten(VI) complex immobilized on Schiff base-modified Fe₃O₄ magnetic nanoparticles as a heterogeneous catalyst for oxidation of alcohols with hydrogen peroxide

Abstract

Oxoperoxo tungsten(VI) complex immobilized on Schiff base-modified Fe₃O₄ super paramagnetic nanoparticles were synthesized and appropriately characterized using FT-IR, XRD, SEM, TEM, EDX, BET, and VSM analysis. The synthesized nanoparticles efficiently catalyzed oxidation of benzylic alcohols with H₂O₂ as oxidant in high yields, with high to excellent selectivity. The catalyst can be recovered using an external magnetic field and recycled for subsequent oxidation reactions without any appreciable loss of efficiency. The simple preparation, high activity, excellent selectivity, and simple recoverability of the catalyst are advantageous.

Keywords:

• Tungsten(VI) complex
• oxoperoxo
• Schiff base
• Fe₃O₄
• magnetic nanoparticles
• oxidation
• benzyl alcohol

Acknowledgements

Authors thank the Research Council of University of Maragheh and the Iran Science Elites Federation (ISEF) for funding of this work.