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Preparation and Characterization of Mcm-41@Peimn As a New Organic-Inorganic Hybrid Nanomaterial and Study of Its Catalytic Role in the Oxidation of Cyclohexene, Ethyl Benzene, and Toluene in the Presence of H2o+ 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, Zanjan, Iran
  2. 2. Department of Medicinal Chemistry, Faculty of Pharmacy, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, 14176, Iran
  3. 3. Medical Biomaterials Research Center, Tehran University of Medical Sciences, Tehran, 14176, Iran
  4. 4. School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea

Source: Bulletin of the Korean Chemical Society Published:2016


Abstract

The manganese-containing mesoporous nanomaterial (MCM-41@PEIMn) was synthesized and used as a catalyst for the oxidation of cyclohexene, ethyl benzene, and toluene. The mesoporous MCM-41 was prepared via hydrothermal method and then polyethylenimine as a reactive surface modifier was grafted on its surface in the presence of ([3-(2,3-epoxypropoxy)propyl] trimethoxysilane) as a grafting agent. Manganese(II) acetate was loaded onto the prepared MCM-41@PEI. The MCM-41, MCM-41@PEI, and MCM-41@PEI. Mn were characterized and elucidated by Fourier transform infrared, powder X-ray diffraction, thermogravimetric, N2 adsorption-desorption, energy-dispersive X-ray spectroscopy, scanning electron microscopy, and transmission electron microscopy techniques. The catalytic activity and selectivity of the MCM-41@PEI. Mn in the oxidation of cyclohexene, ethyl benzene, and toluene with 30% aqueous H2O2 as an oxidant were studied. Furthermore, the influences of various parameters such as temperature, oxidant amount, catalyst reusability, and kinds of solvents have been studied. The results showed that the manganese-containing mesoporous nanomaterial was easily separated from the reaction mixture and reused at least five times without noticeable loss of activity. © 2016 Korean Chemical Society, Seoul & Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.