Popi1955
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Registered: 9-8-2009
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Bi2O3 from BiVO4?
first of all, sorry about my grammar.
is there any (easy \ possible) way of getting bismuth III oxide from bismuth vanadate?
i have access to bismuth vanadate as a pigment.
any useful information will be welcomed.
(any way using simple and easy to get chem's such as sulfuric \ nitric \ hydrochloric acid will be more then welcomed)
ty.
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blogfast25
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I’m no expert on this material at all, in fact it’s the first time I’ve heard of it and it sounds an interesting potential source of both Bi and
V.
From what I read this pigment can be obtained either from pH controlled precipitation or from calcinating the mixed oxides. How easily your product
can be ‘cracked’ will depend on what route was used to synthesise it. High temperature calcinations lead often to very inert materials that defy
attack by strong alkalis/acids.
At a guess and as a starting point I would try and react the pigment with boiling concentrated sulphuric acid, in the hope of solubilising the bismuth
as bismuth sulphate.
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