Synthesis of anhydrous yttrium and rare earth vanadium oxides from aqueous solution

Abstract

Simple salt metathesis reactions from aqueous solutions of soluble precursor salts—Na₃VO₄ and LnX₃ (Ln = Y, La, Ce, Nd, Gd, Dy; X = Cl, NO₃, CH₃CO₂) afford anhydrous yttrium and rare earth orthovanadates. The morphology of the resulting orthovanadates may be modified through variation of the crystallization configuration (test tube vs. u-tube), medium (aqueous, nonaqueous, gel), and reaction conditions (inclusion of chelating agents).