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Abstract
Boehmites (Al 2O 3· xH 2O) were hydrothermally prepared from aluminum alkoxide. The effect of temperature on preparation was studied in the range of 100–180 °C. The XRD analysis shows that with temperature increasing, the transformation of pseudo-boehmite into well-crystallized boehmite takes place. The micro-morphologies change also from irregular clew to thin cubic platelets. From the mass loss of the samples prepared at different temperatures, the value of x is estimated to vary between 1.06 and 1.67. γ-Al 2O 3 obtained by subsequent calcination of boehmite at 600 °C is also characterized by XRD and its morphology remains unchanged.
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