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Novel synthesis of cobalt/poly vinyl alcohol/gamma alumina nanocomposite for catalytic application

Hatamie, S ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1007/s00339-017-0913-6
  3. Publisher: Springer Verlag , 2017
  4. Abstract:
  5. In this manuscript, synthesis of cobalt/poly vinyl alcohol (PVA)/gamma alumina nanocomposite via a simple room temperature, as well as its catalyst performance were explored. Brunauer–Emmett–Teller analysis, X-ray diffraction, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy were conducted. The surface area of the polymeric composite was obtained to be 280 m2/g. The cobalt loading on the nanocomposite was measured using inductivity couple plasma. Transmission electron microscopy analysis showed that the size of cobalt crystalline encapsulate inside the polymer was confined to 5 nm. Magnetic property analysis, using vibrating sample magnetometer, confirmed ferromagnetic nature of the composite. Thermo-gravimetric analyses were employed to explain the degradation process for the polymeric base nanocomposite. Temperature-programmed reduction was used to evaluate the structural form of cobalt oxide in nanocomposite. The catalysis activity was determined by Fischer–Tropsch synthesize, which showed a high catalyst selectivity to C2–C4 hydrocarbons. © 2017, Springer-Verlag Berlin Heidelberg
  6. Keywords:
  7. Alumina ; Catalyst selectivity ; Catalysts ; Cobalt ; Fourier transform infrared spectroscopy ; High resolution transmission electron microscopy ; Nanocomposites ; Polymers ; Thermogravimetric analysis ; Transmission electron microscopy ; X ray diffraction ; Catalyst performance ; Catalytic applications ; Degradation process ; Magnetic property analysis ; Polymeric composites ; Temperature-programmed reduction ; Transmission electron ; Vibrating sample magnetometer ; X ray photoelectron spectroscopy
  8. Source: Applied Physics A: Materials Science and Processing ; Volume 123, Issue 5 , 2017 ; 09478396 (ISSN)
  9. URL: https://link.springer.com/article/10.1007%2Fs00339-017-0913-6