Hello there,
So I just wanted some V2O5 for some experiments, but V2O5 is really expensive here. The cheapest source of vanadium I found was a ferrovanadium alloy
with 81% vanadium, 18% iron and 1% other stuff. So I though I just make V2O5 from that. Basically, I planned on oxidizing the vanadium to V(5+), and
then make the solution alkaline to precipitate the iron as iron hydroxide while the vanadium stays in solution as vanadate. Then I could just filter
it and neutralize the solution to precipitate V2O5. Sounds easy, but the differcult thing is just to dissolve the vanadium. I could just use nitric
acid to make vanadyl nitrate VO(NO3)2, but it takes about 4 parts of nitric acid to dissolve 1 part of ferrovanadium. I also thought about a 1:1 molar
mix of sulfuric acid and nitric acid, which would dissolve it to vanadyl sulfat VOSO4, but you would still need a lot of nitric and sulfuric acid, and
the volume of the solution would get quite big, which I don't want. So my question is, does anyone know a really easy way to basically turn vanadium
metal into V2O5 that I might not have thought about? |