Characterization of CeO2-ZrO2 mixed oxides. Comparison of the citrate and sol-gel preparation methods
(2003) Chemistry of Materials — Vol. 15, n° 2, p. 395-403 (2003)
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- CeO2-ZrO2 mixed oxides were synthesized by two mild chemical routes: complexation with citric acid and the sol-gel method. XRD and ESEM investigations revealed the appearance of a solid solution around 400degreesC , depending on the ratio between the two oxides and the preparation method. Solids obtained by the citrate method were more homogeneous on the whole range of composition. Solid-state investigations of the prepared materials did not show segregation of cerium or zirconium oxides, except in the high Ce ranges for samples prepared by the sol-gel method. The thermal stability of both oxides was enhanced by mutual substitution. The most stable solid solutions were obtained in the range 50 < Ce < 90% mol.
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Citations
Alifanti, M., Delmon, B., Baps, B., Blangenois, N., Naud, J., & Grange, P. (2003). Characterization of CeO2-ZrO2 mixed oxides. Comparison of the citrate and sol-gel preparation methods. Chemistry of Materials, 15(2), 395-403. https://doi.org/10.1021/cm021274j (Original work published 2003)