Article

Pramana

, Volume 63, Issue 2, pp 245-249

Neutron scattering study of combustion-synthesized Ce1−x Cu x O2−x

  • Keka R. ChakrabortyAffiliated withSolid State Physics Division, Bhabha Atomic Research Centre
  • , P. S. R. KrishnaAffiliated withSolid State Physics Division, Bhabha Atomic Research Centre
  • , M. S. HegdeAffiliated withSolid State and Structural Chemistry Unit, Indian Institute of Science

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Abstract

Powder neutron diffraction and Hi-Q neutron diffraction data have been recorded and analysed in order to obtain the local and long range order of Cu in Cudoped CeO2 with three doping levels of Cu. Rietveld method and MCGR techniques of data analysis for the two types of data reveal that the Cu ion is in the 2+ oxidation state and has a vacancy in its first coordination shell. These deductions from the data analysis fit well with the mechanism of catalysis we propose.

Keywords

Combustion synthesis neutron diffraction

PACS Nos

81.20.Ka 61.12.Ld