Im mobilization of cobalt over f unctionalized magnetic nono particles for liquid phase oxidation o f cyclohexene

Olefin catalytic oxidation is an important process, as they arev aluable inter mediates in both living and industrial system s [۱].Deactivationin th e reaction matrix and non-recovery are twoserious flaws of these homogenous systems. O ne way to overcome t hese problems is immobilization on a solid support [۲].Magnetic particles such as Fe۳O ۴ have attr acted moreattention as they could be easily se parated from the soluti onby a magnetic field [۳]. In this w ork, we have reported preparation of novel functionaliz ed Fe۳O۴ n anoparticles and applied the for cy clohexene o xidation. Meth od: Functionalized Fe ۳O۴ nanopa rticles wer e synthesize d accordin g to [۴] an d their form ationwasestablished by X-ray pow der diffraction. For oxidation exp eriments, in a ۱۰ mL round-botto m flask, the prepared catalyst(۰.۱ g, ۰.۰۰۵ mmo l), cyclohex ene (۰.۰۵ m mol) andox idant (۰.۱ m mol) were added inord er. All expe riments wer e repeated i n the variou s solvents su ch as methanol, dichlor omethane, acetone, and acetonitryl. The effect of tem perature, type of oxida nt, and amount of the c atalyst were also investigated. Th e products were analyzed by GC/MS.

کلیدواژه ها:

Catalytic oxidati on ، Magnetic nanoparticle ، Cyclohe xene