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blogfast25
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Morgan:
Both pdfs are interesting but I doubt if these minute additions have much effect on the bulk solubility of the anatase in conc. H2SO4.
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Metacelsus
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Most, but not all, of it dissolved. The insoluble stuff is a grey powder. The solution is very viscous; I will probably have to dilute it with water
in order to filter it.
As below, so above.
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blogfast25
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CC:
Yes, concentrated solutions of titanyl sulphate are quite viscous. Over-dilution will cause the oxide to precipitate again (the basis of the 'sulphate
process' for TiO2). Unless you have glass (or ceramic) filters, decantation may be better than filtering.
[Edited on 11-3-2014 by blogfast25]
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Metacelsus
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Quote: Originally posted by blogfast25  |
Over-dilution will cause the oxide to precipitate again (the basis of the 'sulphate process' for TiO2).
[Edited on 11-3-2014 by blogfast25] |
That's good to know. No, I don't have anything other than paper filters. Decantation is going to be tricky.
About how much can I dilute it before the titanyl sulfate hydrolyzes?
As below, so above.
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blogfast25
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Not sure really, I know it also depends on temperature.
Take a ml of the original solution and dilute it 1:1. Then take 1 ml of that dilution and dilute it again 1:1. Carry on until cloudiness sets in. Use
the dilutions to check your paper: it gets chewed up badly if the acid is too strong.
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