Description

This 2 anodes + 2 cathodes in stainless steel 316; has been conceived to produce 99,9 % perchlorate in 2 stage from table salt : NaCl solution.

The MMO anode (black anode) is coated with same material than the “Ir99” anode but a bit less thick.
The Platinum anode, for perchlorate (clear-Grey) enable to pass chlorate into perchlorate.

The guaranty of success to reach 99,9% perchlorate is to keep the cathode of perchlorate clean as possible, (probably by using dichromate like potasium dichromate, because with persulfate, it is not a frank success).

The Set :

For now, there is only 1 set, and if customers enjoy this route, I could provide other size later.

– 100x50mm with M6x1x25mm standard metric thread, including :
1 MMO Anode (like Ir99 coating able to continue a bit in perchlorate after 100% passed to chlorate)
1 Platinum coating anode (the main part of the price) of heavy coating able to finish the perchlorate run
2 Cathodes in Stainless Steel 316 that works quite well with dichromate.

Specification :

– Anode’s technology : a special MMO coating (having a huge mass of Iridium) coating on Titanium substrate, and the other anode with Platinum, provides excellent resistance to chemicals, and oxidation, especially in perchlorate cells.
– Size : 100x50x1mm with M6x1x25mm
– Cathode size : exactly the same as Anode
– The lifetime is high, but depends on the use conditions.
– Max recommend current is 180mA/chlorate and 230 mA/Cm2 for perchlorate.
– Max recommended working temperature: 70 to 80°C
– Durable and reliable laboratory equipment.
– Note : the first run, a very little dark particles are falling on the bottom of the tank’s brine, it is normal, like all MMO. It can be impressive for those who expect nothing but it is a natural behavior ! The problem is : these particles are partially deposited on the cathode lowering the yield, for perchlorate especially. You need to sand it from time to time if you want to going over 95%.

Warning:

– The coating is quite sensitive, it can be scratch.
– Respect the max current to avoid fast degradation.
– Don’t reverse polarity, it will rapidly destroyed the electrodes (+ wire on the black anode)
– Gas are dangerous and flammable, the running cell MUST work in appropriate place.
– Read the manual please !
– In some countries, for non-laboratories, some (per)-chlorate and their concentrations are restricted.

Manual of laboratory electrolysis

(ENGLISH ): https://feanor-lab.com/Practical_guide_to_electrolysis.pdf

Additional information