Efficient allylic oxidation of cyclohexene over tricomponents nanocatalyst Ru/Co/Ce Using different peroxides as oxidant

Ru/Co/Ce mixed oxide nanoparticles have been synthesized using microreactors made of bis-(2-ethylhexyl) sulfosuccinate (AOT)/water/n-hexane microemulsions. The control of particle size was achieved by varying the process variables, such as water-to-surfactant molar ratio and reagent concentrations. Their size, appearance, and crystal structure were characterized by zeta-sizer, XRD, SEM and TEM. The catalytic oxidation of cyclohexene was carried out over this nano catalyst with tert-butyl hydroperoxide as oxidant. At optimum condition, 2-cyclohexen-1-one was obtained as the major product with small amounts of 2-cyclohexen-1-ol. The activity of the catalyst remains nearly the same after 10 cycles, suggesting the good activity and selectivity for this heterogeneous catalyst.

کلیدواژه ها:

Nanocatalyst ، Cyclohexene ، Allylic oxidation ، Mixed oxide ، Heterogeneous catalysis