Synthesis of Magnetic Fe (3) O (4) @polyethyleneimine.Mn(II) from Fe (3) O (4) , [3-(2,3-Epoxypropoxy)propyl]trimethoxysilane, Polyethyleneimine and Mn(II) Acetate as a Novel Silicon-Containing Polymeric Organic-Inorganic Hybrid Nanomaterial and Its Catalytic Investigation Towards the Oxidation of Cyclohexene, Ethyl Benzene and Toluene in the Presence of H (2) O (2) as an Oxidant

摘要

The surfaces of Fe-3 O (4) nanoparticles were modified with [3-(2,3 epoxypropoxy)propyl]trimethoxysilane and polyethylenimine (PEI) and then manganese acetate was loaded on Fe-3 O (4)@PEI and the resultant Fe-3 O (4)@PEI.Mn nanoparticles applied as a heterogeneous nanocatalyst. The prepared Fe-3 O (4)@PEI nanoparticles were characterized by FTIR, powder X-ray diffraction, TGA, VSM, SEM and TEM. The EDAX analysis was used to identify the elemental composition of the prepared Fe-3 O (4)@PEI.Mn nanoparticles. The catalytic activity and selectivity of the Fe-3 O (4)@PEI.Mn was examined in cyclohexene, ethyl benzene and toluene oxidation reaction with 30 % aqueous H-2 O (2) as an oxidant. Furthermore, the effect of reaction parameters such as kinds of solvents,