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Thermal study on release of lattice oxygen from carbon-bearing Ni(II) ferrite

Author

Listed:
  • Sano, T.
  • Togawa, T.
  • Kojima, M.
  • Tsuji, M.
  • Tamaura, Y.

Abstract

O2-release from carbon-bearing Ni(II) ferrite (CBNF) was studied with TG-MS and DSC. Release of lattice oxygen as O2 was found to take place at 200–300°C and was associated with an endothermic temperature peak. The proposed thermochemical reaction is Olat.(s) = Vö(s) + (12) O2(g), ΔH° = 424.5 kJ/mol, where Olat.(s) and Vö(s) denote the lattice oxygen of CBNF and the oxygen-deficient site on the surface of the CBNF. At a temperature higher than 350°C, lattice oxygen was released as CO2 and was accompanied by a decrease of deposited carbon.

Suggested Citation

  • Sano, T. & Togawa, T. & Kojima, M. & Tsuji, M. & Tamaura, Y., 1996. "Thermal study on release of lattice oxygen from carbon-bearing Ni(II) ferrite," Energy, Elsevier, vol. 21(5), pages 377-384.
    • Handle: RePEc:eee:energy:v:21:y:1996:i:5:p:377-384
    DOI: 10.1016/0360-5442(95)00112-3
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