Synthesis and physicochemical properties of ammonium tetravanadate for obtaining VO2
In order to develop a technological process for obtaining vanadium dioxide by the thermal decomposition, we developed the method of synthesis of highly dispersed vanadium(IV) salt as a precursor. It comprises vanadium pentoxide interaction with the oxalic acid in the solution, which gives intermediate oxovanadium solution, following precipitation of the product (ammonium tetravanadate) by adding ammonium hydroxide to oxovanadium, rinsing and drying the product.