A new simple synthesis and characterization of Sm-doped ceria and its homogeneous precursor [Ce0.80Sm0.20(Ac)(3)(Gly)](n)

作者：Skalar Tina; Macek Jadran; Golobic Amalija^*

来源：Journal of the European Ceramic Society, 2012, 32(10): 2333-2339.

DOI：10.1016/j.jeurceramsoc.2012.02.008

• Precursors-organic
• Sintering
• Fuel cells
• X-ray methods
• CeO2
• Samarium-doped ceria-SDC

A new method for the synthesis of Ce0.80Sm0.20O1.90 is presented. A drying of a solution of ethylene glycol and stoichiometric amounts of the acetates Ce(C2H3O2)(3)center dot xH(2)O and Sm(C2H3O2)(3)center dot xH(2)O resulted in a highly crystalline product of [Ce0.80Sm0.20(G(2)H(3)O(2))(3)(C2H6O2)](n), a new chained polymeric coordination compound. With the calcination of this precursor at 900 degrees C and sintering at 1150 degrees C, pure Ce0.80Sm0.20O1.90, was obtained with the desired homogeneity and density. This paper reports elemental (CHN and ICP-MS) and single crystal X-ray structure analyses of the precursor [Ce0.80Sm0.20(C2H3O2)(3)(C2H6O2)](n). Its thermal decomposition to Ce0.80Sm0.20O1.90 has been studied via HT-XRD and TG-DTA analysis. The structure and composition of Ce0.80Sm0.20O1.90 was also confirmed by powder XRD (Rietveld refinement).

• 出版日期2012-8