Abstract
Nd 2(C 2O 4) 3·10H 2O and Nd(NO 3) 3·6H 2O were used as parent compounds for the formation of Nd 2O 3. Intermediates, the final solid products and thermal processes involved in the decomposition course up to 800 °C in atmosphere of air were monitored by means of thermal analysis (DTA and TG), XRD, IR, SEM and N2-sorption isotherms. The S BET of the final product, Nd 2O 3, obtained from Nd 2(C 2O 4) 3·10H 2O at 610 °C has a surface area of 28 m 2 g −1, while it reduces to 15 m 2 g −1 for the other phase of Nd 2O 3 obtained at 800 °C. The crystalline oxide Nd 2O 3 obtained from Nd(NO 3) 3·6H 2O has higher surface area than the oxide obtained from the oxalate. Nanocrystalline Nd 2O 3 was synthesized by the combustion process. The crystallite size of the powder obtained is less than 50 nm and has high surface area which was produced at low ignition temperature (∼350 °C) and was investigated using XRD and transmission electron microscopy (TEM).
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