ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Tungstate-supported silica-coated magnetite nanoparticles: a novel magnetically recoverable nanocatalyst for green synthesis of nitroso arenes

Masoume Jadidi Nejad, Elahe Yazdani, Maryam Kazemi Miraki, and Akbar Heydari

Tarbiat Modares University, Tehran, Iran

E-mail: heydar_a@modares.ac.ir

Abstract: Tungstate ion was heterogenized on the silica-coated magnetite nanoparticles and applied for the selective oxidation of anilines to nitroso arenes—with hydrogen peroxide/urea as oxidant in dimethyl carbonate as solvent—in moderate–good yields (40–96%). The catalyst was characterized using different techniques including Fourier-transform infrared spectroscopy, X-ray powder diffraction, vibrating sample magnetometry, scanning electron microscopy, energy dispersive X-ray and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The catalyst was easily recovered using an external magnet and reused for six times.

Keywords: Nitrosobenzene ; Tungstate ; Magnetite ; Nano catalyst ; Urea hydrogen peroxide 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00708-x

Chemical Papers 73 (7) 1575–1583 (2019)