Mo(VI)-Supported Complex on Birhodanine Anchored Magnetite Nanoparticles for Epoxidation Reaction

Herein, we have examined magnetite support birhodanine (TMOS-BIRD) in the synthesis of a new Mo(VI) heterogeneous catalyst, (Scheme 1). The new nanocatalyst (Fe3O4@TMOS-BIRD/MoO2) was characterized using Fourier Transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffuse reflectance spectroscopy (DRS), vibrating sample magnetometry (VSM), energy-dispersive X-ray spectroscopy (EDX), Brunauer-Emmett-Teller surface area analysis (BET) and powder X-ray diffraction (XRD). We have tested the applicability of the obtained magnetic catalyst in the epoxidation reaction of olefins with tert-butyl hydroperoxide (TBHP) as oxidant. The final results has confirmed our vision as anticipated. The supported Mo complex exhibited 100 % selectivity for epoxidation of cyclooctene with 97 % conversion, (Scheme 2). The catalytic activity and selectivity of heterogeneous catalyst have not changed after three times of reusing [1-3].