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Synthesis of Magnetic Fe 3O 4@Polyethyleneimine.Mn(Ii) From Fe 3O 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 H2o2 As an Oxidant Publisher



Tarasi R1 ; Ramazani A1 ; Ghorbanloo M1 ; Khoobi M2, 3 ; Aghahosseini H1 ; Joo SW4 ; Shafiee A2
Authors
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Authors Affiliations
  1. 1. Department of Chemistry, University of Zanjan, P. O. Box: 45195-313, Zanjan, Iran
  2. 2. Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, 14176, Iran
  3. 3. Medical Biomaterials Research Center, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea

Source: Silicon Published:2018


Abstract

The surfaces of Fe3O4 nanoparticles were modified with [3-(2,3 epoxypropoxy)propyl]trimethoxysilane and polyethylenimine (PEI) and then manganese acetate was loaded on Fe3O4@PEI and the resultant Fe3O4@PEI.Mn nanoparticles applied as a heterogeneous nanocatalyst. The prepared Fe3O4@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 Fe3O4@PEI.Mn nanoparticles. The catalytic activity and selectivity of the Fe3O4@PEI.Mn was examined in cyclohexene, ethyl benzene and toluene oxidation reaction with 30 % aqueous H2O2 as an oxidant. Furthermore, the effect of reaction parameters such as kinds of solvents, temperature, oxidant amount and catalyst reusability were investigated. Results show that the original properties of the nanoparticles were well preserved and also good activity and reusability were observed in the oxidation of cyclohexene, ethyl benzene and toluene. Moreover, this heterogeneous catalyst can be recovered with a magnetic field and reused for several times without noticeable loss of catalytic activity. © 2016, Springer Science+Business Media Dordrecht.