J. Phys. IV France
Volume 123, March 2005
Page(s) 125 - 130

J. Phys. IV France 123 (2005) 125-130

DOI: 10.1051/jp4:2005123021

The influence of synthesis way and dopant on the crystallites size of ceria

K. Ouzaouit1, A. Benlhachemi1, H. Benyaich1, L. Aneflous1, A. Marrouche1, J.R. Gavarri2 and J. Musso2

1  Équipe PCM, Faculté des Sciences, Université Ibn Zohr, BP. 8106, Cité Dahkla, 80000 Agadir, Maroc
2  Laboratoire L2MP, Université de Toulon et du Var, BP. 132, 83957 La Garde, France

The present paper deals with the preparation of pure ceria by different methods : a conventional precipitation and a new sol-gel process. The size of crystallites was also carried out, aiming at studying the role of synthesis way on properties of pure ceria.

In order to investigate the influence of doping, samples with different molar contents of Mn2+ were synthesized by co-precipitation. The doping level in all samples is expressed in molar percentage. A linear correlation between the lattice parameters and the Mn content confirm the incorporation of Mn in the ceria lattice. The evolution of crystallites size versus the lattice parameter was investigated.

© EDP Sciences 2005