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Rosco Bodine
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Don't convert all of your initial lower valency material
to the higher valency material . Save out half or at least part of the stuff that you have made first as the lower oxidation state . You will find
it useful later for a Pytlewski inspired experiment at wettest stickiest syrup making 
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dann2
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Hello,
Perhaps the Antimony Oxide (ceramic grade) contains Iron.
If it workes for Doped Tin Oxide I do not mind but it would be nice to have no unknowns in the stuff.
Regarding its valency, I don't really mind what the valency is. Similar procedure worked for Antimony Metal + HCl for the DTO so hopefully this will
too.
Metal + HCl resulted in yellow liqued too. The HCl is hardware store (yellow) stuff that has been distilled giving clear HCl.
Dann2
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Rosco Bodine
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This is more concerning tin , but since it is relevant
concerning the destined use , here goes .
The baking of the Sn oxide in air leads to mostly +IV valency material ultimately , but some residual +II material may actually provide doping of a
sort all by itself . So it very well may be counterproductive to drive the reaction all the way to the +IV valency material since the electrical
conductivity of the resulting *pure* SnO2 is poor . It may be better to have an incompletely oxidized precusor mixture . One sure way of getting
that is to mix the lower with the higher , in which case a mixed valency polymer results . On baking then a
mixed oxide is likely to result , having a better conductivity
already by virtue of its own composition .
As for dopant materials , there are many besides the Sb ,
and fluorine is perhaps the very best . It can be added
as ammonium fluoride or as dilute HF or as
stannous fluoride . This would likely be good for any contemplated scheme where you might be trying to have
a catalytically doped SnO2 coating as a possible working anode for perchlorate , as F is a known catalyst for perchlorate (with PbO2) . Whether the
Sb is also , I'm not sure , and some of these catalysts act as such only in combination with something else specific . So alone
or in other combinations it may be a different story .
[Edited on 14-12-2007 by Rosco Bodine]
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dann2
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Hello,
As suggested elsewhere to me my Electic I addes some SnCl4 + water (+HCl) and some Sb chips (and heated) to see if Sb dissolves.
It did not dissolve when cold (9 days).
Heated and the Sb dissolved in about 8 hours but there is some black stuff contained in the solution.
Anyone know what it may be.
Sb came from an ebay element collector on ebay and is 'pure'.
Dann2
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