In this research, Ni2? supported on hydroxyapatite-
core-shell magnetic c-Fe2O3 nanoparticles
(c-Fe2O3@HAp-Ni2?) as a novel, efficient, reusable and
heterogeneous catalyst was reported. In this protocol, we
used this catalyst for the ring opening of epoxide with
sodium azide in water. The catalyst can be readily isolated
using an external magnet and no obvious loss of activity
was observed when the catalyst was reused in seven consecutive
runs. The mean size and the surface morphology
of the nanoparticles were characterized by transmission
electron microscopy, scanning electron microscope,
vibrating sample magnetometry, X-ray powder diffraction
and Fourier transform infrared techniques.
کلید واژگان :
c-Fe2O3 Ni2? supported Lewis acid Epoxide Regioselective Azidohydrins
