ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
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
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.
Chemical Papers 73 (7) 1575–1583 (2019)