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Title: Designed synthesis of multifunctional Fe{sub 3}O{sub 4}@SiO{sub 2}–NH{sub 2}@CS–Co(II) towards efficient oxidation of ethylbenzene

Highlights: • Cooperative integration of magnetic cores and chitosan layers. • Efficient and durable catalyst for the oxidation of ethylbenzene to acetophenone. • Exceptional results of 82.5% EB conversion and 80.4% AP selectivity. • Magnetic recoverable catalyst with excellent reusability even after 10 times run. - Abstract: The preparation of Co(II) supported magnetic heterogeneous catalyst, i.e. Fe{sub 3}O{sub 4}@SiO{sub 2}–NH{sub 2}@CS–Co, and its efficient and selective catalytic properties toward the oxidation of ethylbenzene to acetophenone are presented. The materials were characterized by various physicochemical techniques such as scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, vibrating sample magnetometer, elemental analysis, inductively coupled plasma-atomic emission spectrometer and X-ray photoelectron spectroscopy, etc. The reaction conditions were thoroughly investigated and highly improved catalytic performance (82.5% conversion of ethylbenzene and 80.1% selectivity to acetophenone) was gained under more mild reaction conditions of lower temperature (70 °C), shorter reaction period (60 min) and cheaper and greener oxygen source (H{sub 2}O{sub 2}). More importantly, it could be reused successively at least 10 times when more than 80% of its catalytic activity maintained.
Authors:
 [1] ;  [1] ;  [1] ; ;  [1] ;  [2]
  1. Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034 (China)
  2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012 (China)
Publication Date:
OSTI Identifier:
22420710
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 60; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ACETOPHENONE; CATALYSTS; FERRITES; GAIN; HYDROGEN PEROXIDE; IRON OXIDES; LAYERS; MAGNET CORES; MAGNETIC CORES; OLIGOSACCHARIDES; OXIDATION; SILICON OXIDES; SURFACE PROPERTIES; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; VIBRATING SAMPLE MAGNETOMETERS; X-RAY PHOTOELECTRON SPECTROSCOPY