🚀 go-pugleaf

(To start, sorry for my english)
I didn't understand if you need an oxidizing agent that should
start decomposing at 400 �C or that should be completely
decomposed within that temp. or, finally, that should release
oxigen exactly at that point (neigther below nor above, in other
words).
Anyway .... Chlorates (sodium, potassium, all of which ar
soluble and inexpensive) decompose fairly well into chlorides
(soluble as well) ad oxigen.
This is usually performed with catalists, in liquid water at
much lower temperatures. (an old, lab scale preparation of pure
oxigen used KClO3).
Nevertheless I expect (I'm not sure indeed) that, provided not
even a trace of a catalist be present (e.g. MnIV, FeIII, cobalt,
copper), decomposition should start not to far away from the
temperature aforesaid.
Also Mercury(II) Oxide decomposes simply (even in the solid
state) by heating, releasing oxygen (Lavoisier reaction) over
350-400� C (while it CAPTURES oxygen at somewhat lower
temperature).
Obviously, "Hg" has a rather high vapour pressure at that
temperature (poisoning !) and an unknown (to me at least)
tendency to produce amalgams (suitable stainless steel to be
used)

Hy
Soviet-Mario


ZHEN <zhenf@hotmail.com> wrote in message
3C8EFD08.598AD0C8@hotmail.com...
> Does anyone  know any Aqueous Oxidant, which release O2 at
400C?
> I want to do some oxidation research in supercritical water.
>
> Thanks,
>
> Zhen
>