Synthesis and Properties of La2Mo2O9 Nano-Powder Prepared via Sol-Gel Combustion Route

摘要

In this study, ultrafine La2Mo2O9 powders have been successfully prepared by a novel sol-gel combustion route using a unique combination of citric acid. A range of analyzing techniques including XRD, TG-DSC and BET were employed to characterize the experimental powders. Prom the result of XRD patterns, we found that well-crystalline cubic structure La2Mo2O9 was obtained by calcining the precursor gel at 600 °C for 2 h. The as-synthesized powders have an average crystallite size of 30 nm.It has also been found that the powders produced by sol-gel combustion method have fine sinterability, it can be sintered close to theoretical density at 950 °C for 4 h.