%0 Journal Article
%A Jiménez, Jose A.
%A Padilla, Isabel
%A López Delgado, Aurora
%A Fillali, Laila
%A López De Andrés, María Sol
%T Characterization of the Aluminas Formed During the Thermal Decomposition of Boehmite by the Rietveld Refinement Method
%D 2015
%@ 1546-542X; Essn: 1744-7402
%U https://hdl.handle.net/20.500.14352/34241
%X Boehmite synthesized through a sol‐gel route from a nonconventional raw material, as an aluminum waste, was calcined at temperatures between 500 and 1500°C. Quantification of crystalline phases was performed by the Rietveld refinement of the XRD patterns. γ‐Al2O3 is formed at 500°C, and up to 1000°C, is the dominant phase. At temperatures ranging from 1000 to 1400°C, it was observed the appearance of a four‐phase region. The complete transformation into α‐Al2O3 lasts until 12 h at 1400°C or at higher temperatures. The presence of an amorphous phase in calcined samples was confined by direct comparison with a standard of pure α‐Al2O3.
%X ]
%~