| http://www.w3.org/ns/prov#value | - A solution of the vanadium component is prepared by adding a portion of the reducing agent, such as oxalic acid and isopropanol solution to be employed, to a solution of water and phosphoric acid and heating this mixture to a temperature generally of around 50???-80??? L C. A vanadium compound such as V2 O5 is added incrementally to this heated mixture with stirring.
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