BPinthemorning Posted November 6, 2007 Posted November 6, 2007 This is a thread for disscussion of chlorate cell cathodes and anodes. I'll begin. I found this website, http://rehabilitation-products.medical-sup...duct_search.asp , with what they call platinum electrodes. Would these work in a chlorate cell as anodes? They apear to be for medical purposes, but I want to know if they would be of use to me for a chlorate cell.Also, where can platinum coated titanium mesh, wire, or rods relitivily cheap for a chlorate cell?
LGM Posted November 6, 2007 Posted November 6, 2007 Lets move this to the (per)chlorate thread, more relevant. And no, platinum will corrode in a chlorate cell too fast to be worth it.
WarezWally Posted November 6, 2007 Posted November 6, 2007 Platinum plated stuff is crap and a waste of money, it will work for a short amount of time then it will succumb to erosion. Unless you get a really thick coating (60+ micron) stick with solid platinum or lead dioxide.
BPinthemorning Posted November 6, 2007 Author Posted November 6, 2007 Thanks, but where can I get solid platinum (wire, rod, chain, preferably mesh) for a reasonable price??? And lead dioxide dosenot work for chlorate preperation...
Mumbles Posted November 6, 2007 Posted November 6, 2007 Is there anything wrong with graphite in chlorate cells that you are trying to avoid? Yes, it will corrode over time, but for the same price you'd pay for Pt, you'd have enough graphite anodes to last a considerable amount of time.
oriansbelt Posted November 6, 2007 Posted November 6, 2007 As Mumbles said, for the same price many graphite anodes will last longer than a Pt anode especially since one ounce of Pt is $1,471. Precious metals have been going up quite a bit lately.
BPinthemorning Posted November 6, 2007 Author Posted November 6, 2007 Yes, but I can't seem to filter the graphite from my end product.
BPinthemorning Posted November 6, 2007 Author Posted November 6, 2007 And I am having trouble finding carbon welding rods... I have been using pencil lead after I burn the wood away, and they aren't dence enugh and desinigrate very rapidly.
Mumbles Posted November 6, 2007 Posted November 6, 2007 Well, thats because pencil lead is a mixture of graphite and clay. The clay doesn't stand up well. I think you will have a much easier time finding graphite in one form or another than you will finding a suitible piece of Pt.
WarezWally Posted November 6, 2007 Posted November 6, 2007 Go to eBay and buy a box of it for peanuts problem solved http://cgi.ebay.com/Carbon-Graphite-Chunks...1QQcmdZViewItem
BPinthemorning Posted November 6, 2007 Author Posted November 6, 2007 about how long should a pack of those last? And how many are in a pack?
WarezWally Posted November 6, 2007 Posted November 6, 2007 10 pounds of graphite will last quite a long time provided you do not push a lot of currant through it.
BPinthemorning Posted November 7, 2007 Author Posted November 7, 2007 I use a 9v dc adapter. Is that good? Finaly, how do i get the graphite out of my final solution?
tentacles Posted November 7, 2007 Posted November 7, 2007 bpinthemorning: Find blocks that are EDM grade graphite, which is one hell of a lot more dense than pencil lead or gouging rods - they reportedly last very well in a chlorate cell. one way to remove the graphite is to let it settle to the bottom and siphon off the clear liquor. Alternatively get some really good filter paper, or use something to clog your filter paper to increase it's effectiveness. ie put a clean (or washed at least) powder on the filter paper, and use it, thus clogging the pores and providing a very fine filtration. Don't expect to do this without a buchner funnel, vacuum flask, and vacuum source. I would reccomend using diatomaceous earth to filter this way.
WarezWally Posted November 7, 2007 Posted November 7, 2007 Yes but it will get clogged and it will be slow going. Its best to let the graphite settle and siphon off the clear liquid.
hashashan Posted November 7, 2007 Posted November 7, 2007 Thanks, but where can I get solid platinum (wire, rod, chain, preferably mesh) for a reasonable price??? And lead dioxide dosenot work for chlorate preperation... Where did you hear that?i made NaClO4 out of NaCl directly without filtering or anything with PbO2. If you are refering to the corrosion in a chlorate cell ... yes it corredes a bit maybe 0.5 gram per couple of pounds
WarezWally Posted November 7, 2007 Posted November 7, 2007 Are we talking about platinum erosion? Cause that 0.5g costs you roughly $25 - for a couple of pounds thats expensive.
Mumbles Posted November 7, 2007 Posted November 7, 2007 I believe he was talking about the PbO2 anode.
hashashan Posted November 7, 2007 Posted November 7, 2007 of course i was talking about PbO2 ... 0.5 a gram of platinum is crazy. Pt will hold up nicely up to when NaCl levels drop below 10% PbO2 however will corode a bit all the way up to this poing and then itll be fine.
BPinthemorning Posted November 7, 2007 Author Posted November 7, 2007 Where dose one aquire lead dioxide?
Mumbles Posted November 7, 2007 Posted November 7, 2007 Firefox. However, you can't aquire the material and expect to make anodes from it. One must prepare said anodes themselves. There are several sources around the internet that discuss this in some detail. Generally lead nitrate is the material you want.
BPinthemorning Posted November 7, 2007 Author Posted November 7, 2007 Ya, as a 16 yearold, I lack the knowlage and the resorces to make my own electrodes from lead nitrate, so it will have to be carbon for me. I was directed to this ebay auction, http://cgi.ebay.com/Carbon-Graphite-Chunks...bayphotohosting, but I don't need 10 pounds or $40 of carbon, soooo I've hit a dead end. If anyone has extra carbon rods, bars, or any carbon electrode material, I would be happy to buy it, but I don't need 40 dolars of it.
WarezWally Posted November 7, 2007 Posted November 7, 2007 Ive been thinking, since its easy to buy lead dioxide powder has anyone tried pressing it into an anode? Some people have some pretty powerful presses out there.
Sylar Posted November 8, 2007 Posted November 8, 2007 How far would silver get me as an anode material? Silver oxide is conductive so that shouldn't be a problem ... Silver Chloride is an insoluble, inconductive solid, but will it form around the anode? I can't see silver going into solution with Chloride ions being present, if silver chloride does form, it can be easily seperated again because of it's high density and extremely low solubility.
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