, Volume 63, Issue 2, pp 245–249 | Cite as

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

  • Keka R. Chakraborty
  • P. S. R. Krishna
  • M. S. Hegde


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.


Combustion synthesis neutron diffraction 


81.20.Ka 61.12.Ld 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    P Bera, K R Priolkar, P R Sarode, M S Hegde, S Emura, R Kumashiro and N P Lalla,Chem. Mater. 14, 3591 (2002)CrossRefGoogle Scholar
  2. [2]
    W Liu and M J Flytzani-Stephnopuolos,J. Catal. 153, 304 (1995)CrossRefGoogle Scholar
  3. [3]
    P G Harrison, I K Ball, W Azelee and D Goldfarb,Chem. Mater. 12, 3715 (2000)CrossRefGoogle Scholar
  4. [4]
    P S R Krishna, A B Shinde, A Das, S S Naik, S K Paranjpe and M Ramanadham,Shinde Proceedings of Solid State Physics Symposium 45, 149 (2002)Google Scholar
  5. [5]
    P S R Krishna and A B Shinde,Proceedings of Solid State Physics Symposium 45, 121 (2002)Google Scholar
  6. [6]
    Keka R Chakraborty, P S R Krishna and M S Hegde,Proceedings of Solid State Physics Symposium 45, 117 (2002)Google Scholar
  7. [7]
    E Mamantov and T Egami,J. Phys. Chem. Solids 61, 1345 (2000)CrossRefADSGoogle Scholar

Copyright information

© Indian Academy of Science 2004

Authors and Affiliations

  • Keka R. Chakraborty
    • 1
  • P. S. R. Krishna
    • 1
  • M. S. Hegde
    • 2
  1. 1.Solid State Physics DivisionBhabha Atomic Research CentreMumbaiIndia
  2. 2.Solid State and Structural Chemistry UnitIndian Institute of ScienceBangaloreIndia

Personalised recommendations