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Laboratory of Liptakov
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This thread relates to the issue of preparing xClO3 in cell. For questions on usage will probably be somewhere else..... ....LL
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underground
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I have done a great job with some homemade mno2 electrodes over a titanium plate. It is a kind of a MMO electrode. That is how i made my naclo3. Next
time i will try with kcl. I used a computer power supply. The cell was running at 75-80 °C.
[Edited on 21-3-2017 by underground]
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markx
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Quote: Originally posted by Laboratory of Liptakov  | 1) And still question: multi metal oxide (MMO) anode has how final surface ?
2) Important is good experience with really use anodes. Because e-bay can be fake, false... your recommend link for buy please ?
Thanks.........LL |
I have used MMO material from the seller "laserred" on ebay:
http://www.ebay.com/usr/laserred?_trksid=p2047675.l2559
At least the electrodes that I bought were excellent and served their purpose very well. That was a few year ago, so I can not comment on current
quality of materials on sale.
Exact science is a figment of imagination.......
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Laboratory of Liptakov
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Titan anodes
Well, thanks, markx....of course conditions is not same during a few years....
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Laboratory of Liptakov
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MMO run
OK, MMO anode now running. But sellers recommend 250 - 300 mA on 1 cm2. But Anode is mesh, sieve. What hell measure it ? One side, both side ? Maybe
will better hold only Voltage under 4 Volts. Momentaly is active surface (measure from one side) 50,8 cm 2. And current is 14 A at 4,1 Volts. It are
275 mA / cm2. It is right ? Or I am counting bullshit...:-) Next thing, the connecting strip of anode is pretty hot, about 70 Celsia. Yet, that his
surface is with contact with Copper plates in long 6 cm from both sides. Very weird. ......LL
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yobbo II
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Area of LaserReds mmo mesh has been discussed before somewhere or other and it was agreed that the area is equal to lenght by breath just as if it
were a flat solid piece of mmo. The holes get cancelled out by the extra area on the 'inside' of the holes.
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Laboratory of Liptakov
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Thanks. Other words 1 cm2 on mesh = 1 cm solid planar surface, counting on one side. Thus, 1cm2 anode (mesh) = 2 cm2 surface as total large for
counting of current. Right ?
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hyfalcon
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Run slightly smaller cathodes on both sides of your anode. Keeps you from pushing your MMO surface too hard.
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yobbo II
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| Quote: Originally posted by Laboratory of Liptakov | | Thanks. Other words 1 cm2 on mesh = 1 cm solid planar surface, counting on one side. Thus, 1cm2 anode (mesh) = 2 cm2 surface as total large for
counting of current. Right ? |
It is around two times the length x breath of the piece of mesh.
"A major MMO manufacturer told me that their MMO mesh was 2.2 times the basic dimensions."
This quote from here
http://www.amateurpyro.com/forums/topic/3981-the-bucket-cell...
Yob
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Laboratory of Liptakov
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Beware of this seller. Sells very low quality platinum anodes.
http://store.theamateurchemist.com/platinum-titanium-anode-2...
All describe here: https://www.youtube.com/watch?v=xV-SaP2iv7s
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Mixe
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I bought my MMO anode from The Amateur Chemist, and I haven't had any issues with it. Works very well. I run 5V/5A since I'm in no hurry, and so far I
get 50-65% yield over a period of 3-4 days. I spike my juice with a little potassium dichromate to reduce back-reduction at the cathode, and I have an
old IV drip adjusting pH with 10% HCl solution.
The low amperage doesn't give off a lot of heat though, so I apply external heating to keep the cell at 70 C. My next development is automatic pH and
temperature control through a pH sensor and electronic thermometer connected to an arduino.
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Laboratory of Liptakov
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OK, I am glad, to hear it. My MMO also run without problem for chlorates. But I writted beware of Platinum (for perchlorates) was damaged during a few
hours. Therefore I beware on Platinum active surface wherein the main problem. Dr.
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Pyro_cat
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| Quote: Originally posted by The WiZard is In |
On a small-scale basis, successful chlorate/perchlorate production is a
real challenge, and this chemist was largely a failure at the effort. The
requirements of a high-amperage, low-voltage power source largely rule out
batteries on any continuous basis. The common 6-volt battery charger is the
most convenient power source but suffers from lack of variability. The large
types used by garages can deliver an output of 50-100 amperes. The
problem of varying the voltage might be solved by use of a rheostat hooked
in series with the positive or negative output lead, but amperage would
(suffer.
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The problem of voltage is solved on the INPUT lead with a variac.
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symboom
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Phone charger 5v power supply some provide 2.1 A of power
Is that a good power supply for chlorate?
[Edited on 6-7-2018 by symboom]
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Laboratory of Liptakov
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It is 10 Watt only. You need minimal 100 W power supply. And A / V meter. Normal amateur cell on 1 liter is 6 V/20A.
= 180 W = power supply 200 W trafo. Trafo must had power cooler fan.
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markx
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Using low frequency iron core transformers for conducting amateur electrosynthesis on any appreciable scale is a dead artform in my opinion. The
system is bulky, tends to have high losses and keeping the temperature under control is of essence. They are quite "bombproof" if dimensioned
correctly and simple as dirt though...
On the other hand there are very efficient and cheap switch mode power supplies available and most of them have variable output voltage (at least to
some degree). I find these vastly superior to the old school bulky transformer setups.
Exact science is a figment of imagination.......
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MJ101
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I would stay away from using an "off-line" switcher, like the kind you find in a computer. Too limited in voltages
and the current limiting is fixed. I would use a lab supply, especially if I was collecting data as to what voltages are optimal and what currents
are really needed. Also, the outputs are variable DC, and have current limiting and short circuit protection.
Something like this:
https://www.amazon.com/SUNCOO-Precision-Variable-Adjustable-...
They're all over Amazon and eBay. This particular one is fairly inexpensive and has a pretty good range and output. (0-30V,0-10A)
And, as you can see, the price is right. 
Also, a question:
I noticed that someone posted a Variac (auto-transformer)
Unless you use it with a rectifier, wouldn't that produce an AC waveform?
If so, wouldn't that alternate the polarity at the electrodes at (50 or 60 hz )
What would that do to any yields?
[Edited on 12-7-2018 by MJ101]
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Pyro_cat
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| Quote: Originally posted by manvstaco | Ok so I will be making a decent power supply out of an old transformer like this video here -- > http://www.youtube.com/watch?v=Yr8HKlX4VnU , getting tied of the pc power supply and how slow things move......... I am wondering....
I have heard of people using carbon rods for both the anode and a cathode if this is the case can I use a low voltage high amp A.C. to power my
cell since my electrodes are the same material? is this possible or am i dreaming? I dont want to go buy diodes to convert it to D.C.  I.e. 5 vlts @ 200 amps A.C. |
I just had the same idea 21 years later. Why can't I just use AC if anode and a cathode the same?
I just wonder if the "vibrations" would be destructive to the electrodes or would the alternating current constantly reverse destructions?
I searched the question use AC chlorate cell and this science madness thread came up in results.
Doing the bleach method now, but I have a variac and engineering the 5 volts ac would be easier then DC.
Those new "smart" batter chargers suck, if I could find an old 6-12 volt batter charger with my variac I could run the 5 volts
Ac works for splitting water it why shouldn't it work chlorate cell ?
Ac wont charge a battery, so there is that,
[Edited on 6-4-2021 by Pyro_cat]
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Pyro_cat
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I posted on this thread before, I have a headache. Type on here tomorrow.
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