Synthesis of complex oxide phases by using of low hydrated niobium and tantalum hydroxides

Promising method of complex oxide phases synthesis by using low hydrated hydroxides of niobium and tantalum (Nb,Ta)Ox(OH)5−x·mH2O precursors of high reactivity and sorption ability was developed. Precursors, intermediate products of synthesis and target materials were studied by thermogravimetric analysis, infrared spectroscopy and X-ray diffraction. Sorption process of magnesium and lead cations by niobium low hydrated hydroxide from acetic solution allows obtaining PbMg1/3Nb2/3O3 complex perovskite without any secondary phase.