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Alumina-ceria composites were prepared by the calcination in air of gels obtained by homogeneous precipitation from dilute chloride and nitrate solutions, followed by either microwave treatment, autoclave treatment or air-drying. Microwave treatment and air-drying of the gels yielded amorphous powders whereas autoclave treatment yielded well-crystallized boehmite. The phase evolution during calcination was investigated by in-situ X-ray diffraction (XRD) and by differential thermal analysis and thermogravimetry (DTA/TG). The structures of the calcined powder were investigated by transmission electron microscopy (TEM) and high resolution TEM.

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Authors: DJURICIC B, JRC Petten (NL);PICKERING S, JRC Petten (NL);MCGARRY D, JRC Petten (NL);TAMBUYSER P, JRC Petten (NL);THOMAS P, Université de Limoges (FR)
Bibliographic Reference: Article: Journal of Materials Science (1997)
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