A Novel Method to Prepare High-purity Vanadium Pentoxide by Chlorination with Anhydrous Aluminum Chloride

A novel method to prepare high-purity vanadium pentoxide (V2O5) was proposed, and V2O5 with a purity of above 99.95 wt %, in which the concentration of Fe was at 0.0060%, the concentration of Al was at 0.0040%, and Si, K, Na, and other impurities were under the determination limit, was obtained. In this method, anhydrous aluminum chloride (AlCl3) was adopted, which replaced toxic and corrosive Cl2 in the traditional chlorination method. Moreover, the reaction temperature was relatively low at 160 °C compared to Cl2 chlorination method. A novel method to prepare high-purity vanadium pentoxide (V2O5) was proposed. V2O5 with a high-purity of 99.95% was obtained. Anhydrous aluminium chloride (AlCl3) was adopted as chlorination agent to achieve the separation vanadium from impurities at low temperature of 160 °C. This method enables a lower cost, shortened process, a higher selectivity, and simpler and cleaner operation to prepare high-purity V2O5.