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blogfast25
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Mr HS:
Nice write up. Remind me, what does MMO stand for?
Will you try and replenish the cell with KCl or does the whole electrolyte solution have be replaced for each batch?
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plante1999
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mixed metal oxides, usually ruthenium and iridium oxides + titanium oxides.
I never asked for this.
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MrHomeScientist
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Yeah blogfast, the cell liquid is reusable. I'm going off woelen's excellent page on making a chlorate cell. He states that the leftover liquid can be regenerated by re-saturating with KCl, and it works a bit
faster since it already has some chlorate dissolved.
Thanks for the electrodes, plante!
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Manifest
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I have some TCCA tablets out the back and Sulfuric Acid from CuSO4.
Could I bubble chlorine through NaOH with a lucozade bottle and achieve good results?
Just a thought.
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plante1999
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There is a procedure in the PDF I made which uses potassium hydroxide, sodium hydroxide, and chlorine, you may want to try it.
I never asked for this.
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Manifest
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Is recrystallization always done with 3 times the weight of crystals? I thought it was enough to dissolve them.
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plante1999
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Yes, and that. for potassium chlorate, is about 3 times the weight of the crystals in water.
I never asked for this.
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Manifest
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I can get 2 litres of 5% bleach for 30p or 50 cent for you.
This might work out well.
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blogfast25
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Sounds expensive and hard to get?
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Manifest
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Not really. Zyklonb is selling them for $3 per sq.inch if you buy 2 inches or more.
Free shipping to US.
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MrHomeScientist
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They show up on eBay occasionally too, if you keep an eye out. I bought mine from plante a while back.
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blogfast25
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So how much ruthenium/iridium do they contain? Is their presence catalytic somehow?
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Zyklon-A
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| Quote: |
So how much ruthenium/iridium do they contain? Is their presence catalytic somehow? |
The person I bought them from didn't know what metal oxides were in it, although it has been tested to contain both ruthenium and iridium. Needless to
say, He did not know the concentration. AFAIK, their presence is not catalytic. Ruthenium and iridium oxide are just cheaper than some of the other
suitable inert coatings.
[Edited on 30-4-2014 by Zyklonb]
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hyfalcon
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http://www.ebay.com/itm/EXPANDED-TITANIUM-MESH-STRETCHED-SCR...
I don't know how much longer he's going to have these so you better get them while they are still available. I've got all I'll EVER need myself.
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plante1999
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Ruthenium oxide is EXTREMELY catalytic in chlorine generation, it drops the energy needed by a so large % that it was the main reason why chlor-alkly
plants invested in such research to use them instead of graphite. The coating is very thin and mostly consist of titanium oxide, a tiny part of
ruthenium oxide and traces of iridium to give a longer but less efficient life to the anode.
I never asked for this.
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Zyklon-A
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Really? Well then, I guess I was wrong. I assumed there was not any catalytic property's in ruthenium or iridium oxides.
[Edited on 30-4-2014 by Zyklonb]
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Manifest
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How many sq. inches should I invest in of mmo anodes? $3 per square inch is really good.
Zyklon have you checked how much shipping is to the UK?
Could I apply 12 Volts to a MMO anode?
[Edited on 30-4-2014 by Manifest]
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Zyklon-A
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It depends on how many amps your PSU can supply.
Yeah, it will be quite cheap, about $1.00 as far as I know.
No! Do not use more than ~5.5 volts with MMO, above that you will start making perchlorate, and MMO can not be used for that
- the anode will deteriorate.
[Edited on 30-4-2014 by Zyklonb]
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Manifest
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I'm using a DC battery charger at the minute.
I only have 6 and 12 volt options and a maximum of 6 amps.
For some reason with graphite anodes 6 volts only gives me 1 amp but at 12 volts I have 6 amps.
Will this be the same with mmo anodes? Surely 6 volt compared to 5.5 wouldn't hurt.
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Zyklon-A
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Yeah, 6 volts probably wouldn't hurt anything.
If you could reduce the voltage from 12 to about 5 then you could make a decent amount of chlorate. I don't know much about electricity, but it
shouldn't be hard.
I'm not sure how much MMO you'll need, even if I knew the amps you're using because I don't know the surface area of the anode. 3 sq inches should be
enough for over 6 amps I'm sure.
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Manifest
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Thank you guys so much for advice!
I made the chlorate today and achieved snow white crystals. Didn't achieve much product, mind you, but I will soon fix that.
Mixed it with sugar 50:50 and lit and it was fantastic.
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Manifest
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Boiled down 1 litre of bleach but didn't get crystals.
Instead I got this weird cloudy precipitate that floats about the solution...
Any ideas what this is?
[Edited on 5-5-2014 by Manifest]
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blogfast25
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No, but your photo is oversized.
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Manifest
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I would fix it but I am limited to an iPad because my laptop broke.
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MrHomeScientist
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Is your bleach the generic brand, cheapest bleach available? The more pricy ones add fancy detergents, fragrances, or "stabilizers" that can interfere
with chemistry use.
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