Quote: Originally posted by Simoski |
I really like this idea, now all we need is a way to remove the nitrate ions! Ideas please gentlemen....
Would copper nitrate do the same... yield CuCl2 and drop out leaving the nitrate ion behind in solution??
[Edited on 8-4-2019 by Simoski] |
There is really very little point in trying to remove the last bit of chloride from the chlorate stock prior to perchlorate synthesis. In all
probability one shall introduce more contaminants into the stock by the process and gain nothing in return. Some of the contaminants may have
deleterious effects upon later perchlorate conversion.
Excess chloride shall be converted to chlorate at the Pt and the equilibrium concentration is there anyways, so not to worry.
As far as I've seen from my experience, the initial stages of perchlorate synthesis shall hardly cause damage to the platinum. It is the end phase
where chlorate depletion steps in that seems to munch away on the Pt at a nice rate. And I've never used purified NaClO3 for the purpose....just plain
solution straight from the chlorate synth stage. It definitely contains some excess chloride to begin with.
In fact I read a patent regarding the Pt erosion in perchlorate cells and it was stated that Pt erosion can be held at a minimum if a certain ratio of
ClO3- /ClO4- is maintained in the cell. It seemed quite cumbersome and challenging to monitor and maintain this ratio, so I did
not spend too much attention to the document. I'll try to find the reference....
Found it:
[Edited on 10-4-2019 by markx] |