Sciencemadness Discussion Board

Extremely small platinum anode ?

KonkreteRocketry - 2-4-2013 at 00:52

Hello guys, I found a store beside me that sells 0.1 gram of platinum for 35 dirhams, which is around 10 dollars. it is a long, and very thin wire shaped. I was wondering if i could buy that for platinum anode. yeah.


it looks exactly like this _____________________

Yupp. So can i make chlorate with it ? will the platinum corrode? I am wanting to make som sodium chlorate with it, if theres possible route to it with this small platinum wire then i would give it a try, thanks.

hissingnoise - 2-4-2013 at 03:10

Quote:
So can i make chlorate with it ? will the platinum corrode?

Yes to both ─ but at negligibly slow rates . . . perchlorate too!
The electrical conductance of Pt is appreciably lower than that of Cu or Al so that you'd need to spend a lot more than $10 for a usable anode!

KonkreteRocketry - 2-4-2013 at 03:16

Quote: Originally posted by hissingnoise  
Quote:
So can i make chlorate with it ? will the platinum corrode?

Yes to both ─ but at negligibly slow rates . . . perchlorate too!
The electrical conductance of Pt is appreciably lower than that of Cu or Al so that you'd need to spend a lot more than $10 for a usable anode!



so 2 wires arent enough :( 2 wires is 20 dollars.. thats like so much to me -.- im poor.

hissingnoise - 2-4-2013 at 03:24

Graphite anodes are sufficient for chlorate . . .
More here!

plante1999 - 2-4-2013 at 03:42

It is not the length that mater, it's the thickness. You need about 0.5mm thickness minimum.

KonkreteRocketry - 2-4-2013 at 03:57

Quote: Originally posted by hissingnoise  
Graphite anodes are sufficient for chlorate . . .
More here!



Thank you, but my carbon corrode also.... so ???

plante1999 - 2-4-2013 at 04:09

Buy MMO mesh, the member mixel supposedly live quite near you and could possibly ship you one if you bought him, I could too, but the shipping would be extremely costly.

Endimion17 - 2-4-2013 at 08:34

Quote: Originally posted by KonkreteRocketry  
so 2 wires arent enough :( 2 wires is 20 dollars.. thats like so much to me -.- im poor.


Yeah, most of us are.
Quote: Originally posted by plante1999  
It is not the length that mater, it's the thickness. You need about 0.5mm thickness minimum.


That's what she said. :( XD

plante1999 - 2-4-2013 at 08:40

@Endi
Then I'm ok, I have way more than 0.5 mm Ha Ha Ha

I should have taught someone would say such a joke...

[Edited on 2-4-2013 by plante1999]

Mixell - 2-4-2013 at 20:43

It is quite near, but virtually so far away...

Our post doesn't even offer service to their country (and several others).

KonkreteRocketry - 3-4-2013 at 00:42

Quote: Originally posted by Endimion17  
Quote: Originally posted by KonkreteRocketry  
so 2 wires arent enough :( 2 wires is 20 dollars.. thats like so much to me -.- im poor.


Yeah, most of us are.
Quote: Originally posted by plante1999  
It is not the length that mater, it's the thickness. You need about 0.5mm thickness minimum.


That's what she said. :( XD


hahahahahahhahahaahah

KonkreteRocketry - 3-4-2013 at 00:51

ok, seriously.. Can i use aluminum ? as it have a protective layer of al2o3 ? or can i use titanium ? can i see a list of metals that corrode extremely slow to fast ? so i can decide what to buy ? thanks.

woelen - 3-4-2013 at 01:34

Aluminium and titanium both are useless as anode. Aluminium quickly corrodes and titanium passivates and is covered by a thin but non-conductive layer.

Indeed, buy MMO if you want good results, or otherwise use graphite and accept the erosion of the anode and the corresponding filtering problems.

If you use graphite, then use NaCl for making chlorate, then filter as good as possible (allowing the liquid to stand for several days and decanting the clear liquid above the crap at the bottom is another option) and use KCl to crystallize KClO3.

If you use MMO, then use KCl for making chlorate and simply harvest crystals of KClO3 directly from the cell.

In both cases you also need some hexavalent chromium, but you can make that from bleach and some chromium(III) salt, such as chrome alum or chromium sulfate.

Bezaleel - 3-4-2013 at 03:49

If filtering the tiny carbon particles (from electrolysis with carbon electrodes) is troublesome, use a fritte with a thin layer of diatomacious earth, or even alumina. This will filter any carbon out.

KonkreteRocketry - 3-4-2013 at 10:37

Quote: Originally posted by woelen  
Aluminium and titanium both are useless as anode. Aluminium quickly corrodes and titanium passivates and is covered by a thin but non-conductive layer.

Indeed, buy MMO if you want good results, or otherwise use graphite and accept the erosion of the anode and the corresponding filtering problems.

If you use graphite, then use NaCl for making chlorate, then filter as good as possible (allowing the liquid to stand for several days and decanting the clear liquid above the crap at the bottom is another option) and use KCl to crystallize KClO3.

If you use MMO, then use KCl for making chlorate and simply harvest crystals of KClO3 directly from the cell.

In both cases you also need some hexavalent chromium, but you can make that from bleach and some chromium(III) salt, such as chrome alum or chromium sulfate.


Why do i need chromium salt ? Is there any thing else ? wont it contaminate the chlorate ?