That looks doable. Sadly we only have enough ThO2 for one attempt.
guess we'll just have to plan it really well.
So basically baking stioceiometric amounts of ThO2 and Ca together with a bit of CaCl2
In a steel tube will work?
The thorium sinks to the bottom of the tube and is protected from oxygen. So presumably the thorium would would be in one solid piece?
And one more question. Can thorium be stored under mineral oil like
sodium/potassium?
[Edited on 10-5-2016 by Ba(ClO3)2]careysub - 9-5-2016 at 21:12
Look up the Ames Process developed for uranium reduction in a steel "bomb" (sealed vessel). Particularly look for refs on how it was done on the gram
scale. There is a fair amount of literature available on this. Thorium reduction would handled in a similar manner.
What you probably want to do is place your ThO2 and calcium in a small threaded steel pipe which you will seal with a cap (just like a "pipe bomb")
after flushing with inert gas, then heat the bomb up to the reaction temperature in furnace (a small unit like this will not be significantly self
heat).
When reducing uranium they would often add a little iodine as an initiator, but I doubt that would be necessary if you can heat to a high temperature.
The iodine was used in a large bombs were reaction self-heating largely drove it to completion.
Unlike uranium, which melts below the melting temperature of steel, thorium does not. A ceramic vessel would be needed to melt thorium.
[Edited on 10-5-2016 by careysub]j_sum1 - 9-5-2016 at 21:45
I highly recommend reading Dan Vizine's thread cited by blogfast. It really lets you know what you are in for. I doubt you will find anything
straightforward unfortunately.Ba(ClO3)2 - 10-5-2016 at 00:22
We have read most of Dan Vizine's thread.
He obtained the thorium in powder form. We think this would probably be the form we made as well.
So based on Dan vizine's work and the information careysub provided we are thinking on doing something like this:
Add stoichiometric quantities of ThO2 and Ca mixed intimately into a steel tube ("bomb") flushed with CO2. Seal the tube. Heat the tube to 450 C for
30-60 minutes. Let the mixture cool down then quickly open the "bomb" and empty the contents into dilute acetic acid.
The CaO should dissolve as Ca(CH3COO)2 and the thorium powder should remain undissolved. Filter off the thorium then quickly transfer it to a vial of
mineral oil for storage.
As we understand it thorium is only slowly attacked by water and does not react with acetic acid.
All in all does it sound feasible?
We understand powdered thorium is pyrophoric
Thanks to all you guys
Sorry if we've missed something.
[Edited on 10-5-2016 by Ba(ClO3)2]
[Edited on 10-5-2016 by Ba(ClO3)2]Ba(ClO3)2 - 11-5-2016 at 17:07
Would CO2 work as an innert gas?
We can get hold of argon but CO2 would be a lot cheaper.
As far as we can tell CO2 does not react with thorium or
Welding argon really isn't expensive. And useful in a variety of other chemical circumstances too...
[Edited on 12-5-2016 by blogfast25]Ba(ClO3)2 - 31-5-2016 at 00:36
We have found a fairly cheap source of argon and are currently making a pipe-bomb for the reaction.
Thanks to everyone for there help and suggestions so far.
Many would dispute it.
.