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blogfast25
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Quote: Originally posted by j_sum1  |
(blogfast25 will likely be here shortly to tell me that it is thermodynamically inviable with Mn. But it is an idea.) |
I doubt indeed that it is possible, as Mn is quite electropositive and Ag is not. The latter (Ag(+1)) really is super easy to reduce.
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blogfast25
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| Quote: Originally posted by crystal grower | Have anyone tried separation of cobalt from AlNiCo magnets?
If yes could you tell me at least briefly the procedure you have used?
Thanks a lot. |
Suggestion (untested):
1. Dissolve in string HCl.
2. Precipitate as hydroxides, then separate out Al as soluble aluminate with strong alkali.
3. Re-dissolve Ni/Co hydroxides in HCl, separate out Ni as poorly nickel glyoxime.
[Edited on 26-2-2016 by blogfast25]
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crystal grower
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| Quote: Originally posted by blogfast25 | | Quote: Originally posted by crystal grower | Have anyone tried separation of cobalt from AlNiCo magnets?
If yes could you tell me at least briefly the procedure you have used?
Thanks a lot. |
Suggestion (untested):
1. Dissolve in string HCl.
2. Precipitate as hydroxides, then separate out Al as soluble aluminate with strong alkali.
3. Re-dissolve Ni/Co hydroxides in HCl, separate out Ni as poorly nickel glyoxime.
[Edited on 26-2-2016 by blogfast25] |
thanks, I will try it ,but today I found out that magnets which I thought to be AlNiCo wern´t alnico  .
So I must first get some.
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crystal grower
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Hello, I found these old capatitors today, they are roughy 30years old and made in czechoslovakia.
Is it possible to tell if there´s any palladium or some other precious metal in it?
   
[Edited on 27-2-2016 by crystal grower]
[Edited on 27-2-2016 by crystal grower]
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woelen
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The 1000 uF capacitor looks like an electrolytic capacitor. These contain thin Al-foil, with isolating paper-like stuff between the layers of
Al-foil. No palladium or other interesting materials.
The 8 uF capacitor is more interesting (albeit not from a chemical point of view). It is a high voltage AC-capacitor. If you are in for electronics,
then you can use it for nice experiments. Do not expect any interesting materials in the capacitor if you take it apart.
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crystal grower
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Thanks for answer.
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crystal grower
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| Quote: Originally posted by blogfast25 | | Quote: Originally posted by crystal grower | Have anyone tried separation of cobalt from AlNiCo magnets?
If yes could you tell me at least briefly the procedure you have used?
Thanks a lot. |
Suggestion (untested):
1. Dissolve in string HCl.
2. Precipitate as hydroxides, then separate out Al as soluble aluminate with strong alkali.
3. Re-dissolve Ni/Co hydroxides in HCl, separate out Ni as poorly nickel glyoxime.
[Edited on 26-2-2016 by blogfast25] |
That would certainly work, and I also wanted to try it but then I realized the price of dimethylglyoxime which makes this procedure quite expensive.
Is there any cheaper replacement for dimethylglyoxime/different method of extracting it from AlNiCo?
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blogfast25
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Co(+2) can also be precipitated as yellow, insoluble K3Co(NO2)3 (potassium trinitritocobaltate (III)) by adding
KNO2 and acetic acid to a Co(+2) solution.
Unfortunately Ni and Co are very similar chemically, so not easy to fully seperate.
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crystal grower
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So I should probably rather try to extract from li ion battery.
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blogfast25
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http://www.first4magnets.com/samarium-cobalt-magnets-t140?gc...
Samarium Cobalt magnets. Very OTC. Convert Co to ammonia complex:
http://www.chemguide.co.uk/inorganic/transition/cobalt.html
Sm will stay behind as insol. Sm(OH)3.
[Edited on 4-3-2016 by blogfast25]
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crystal grower
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Thanks a lot.
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MrHomeScientist
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Some of you may have seen this already, but I wanted to announce the start of a new video series on my channel: Elemental Extractions.
It will be a series geared towards element collectors, showing sources for elements and how to isolate them from their compounds. I wanted to post it
here, because it fits this thread pretty nicely. I'm sure I'll use some of the discussion here for future videos, so keep it up!
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crystal grower
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That´s great.
I am absolutely looking forward to it!
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elementcollector1
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| Quote: Originally posted by MrHomeScientist | Some of you may have seen this already, but I wanted to announce the start of a new video series on my channel: Elemental Extractions.
It will be a series geared towards element collectors, showing sources for elements and how to isolate them from their compounds. I wanted to post it
here, because it fits this thread pretty nicely. I'm sure I'll use some of the discussion here for future videos, so keep it up! |
As much as I enjoyed the hydrogen video, I really would like to see someone work out a way to ampoule the stuff. Still, I did end up learning a few
things!
I wonder what you're going to do for lithium - classic "from batteries" route ala NurdRage, or spice it up a little with something else?
Elements Collected:52/87
Latest Acquired: Cl
Next in Line: Nd
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j_sum1
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| Quote: Originally posted by MrHomeScientist | Some of you may have seen this already, but I wanted to announce the start of a new video series on my channel: Elemental Extractions.
It will be a series geared towards element collectors, showing sources for elements and how to isolate them from their compounds. I wanted to post it
here, because it fits this thread pretty nicely. I'm sure I'll use some of the discussion here for future videos, so keep it up! |
Very cool. I have noticed your regular
channel out of action for a while. This will be great!
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symboom
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Extracting unknown metal from lithium ion battery
So desolving the components of the inside of a lithium ion battery in hydrochloric acid filtered then sodium bicarbonate is added. A brown percipitate
seems to form and stays that way untill filtered then it starts to turn green.
I dont know what it is steel casing fell in the acid mixture andd turned pinkish salmon color
What happened my goal is cobalt carbonate
Test performed
Reacts with sulfuric acid forms a bright green to medium green solution
Surprising reacts with sodium hypochlorite to form a purple solution and black precipitate. Did not expect a reaction like that. Tested because I
thought there would be chromium in solution
[Edited on 2-10-2016 by symboom]
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barbs09
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Hello, sorry if my question is answered up thread. Any eBay recommendations for specimen containers?
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MrHomeScientist
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Depends on the size of your samples, and how you plan to display them. Mine are the 2-dram vials from www.specialtybottle.com, though I do have a couple larger ones for bigger samples.
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Plunkett
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Again, it depends on the size, but all of my samples are in ampoules made from 13 mm disposable test tubes like these. They are the perfect size for the smaller samples you get from extractions and a lot cheaper than screw top vials. NileRed has a good video on making them.
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Dancing Rain
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| Quote: | As much as I enjoyed the hydrogen video, I really would like to see someone work out a way to ampoule the stuff. Still, I did end up learning a few
things!
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Is ampouling at low pressure acceptable? If so, here's how I did it:
https://www.youtube.com/watch?v=41Wv14Loa3U
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elementcollector1
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Very nicely done! I especially enjoyed your apparatus - very ingenious. I'll have to look into what you used in the vacuum setup - I've always had
problems with 'keeping' a vacuum once the pump is turned off. That said, I do have a few questions:
1) How did you discern the color of hydrogen as opposed to air/nitrogen/etc.? From what I've looked up, they all seem to be purple.
2) What is that HV setup you're using (and what's the 'beer bottle' thing)?
3) What voltage/current were you using for the electrolytic cell? I think I missed it.
Elements Collected:52/87
Latest Acquired: Cl
Next in Line: Nd
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Dancing Rain
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elementcollector1: Thank you 
| Quote: | | 1) How did you discern the color of hydrogen as opposed to air/nitrogen/etc.? From what I've looked up, they all seem to be purple.
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I used to collect spectrum tubes, so I had become familiar with the particular colors of some of the elements in pure form.
Plain air - royal purple
Nitrogen - pinkish purple
Hydrogen - purple at low currents, Barbie™ pink at high currents
Oxygen - depends on which source you look up. I've seen pictures claiming to be of glowing oxygen ranging from blue to purple to red.
What I should have done is gotten out a diffraction grating and shown the spectrum in the video.
| Quote: | | 2) What is that HV setup you're using (and what's the 'beer bottle' thing)? |
The first HV source is from an automotive neon tube. I'm not sure its output voltage or current, as I don't have a meter that reads over a kilovolt
yet.
The second HV source "the 'beer bottle' thing" is a coaster that originally came with a double-walled neon-filled beer mug. It's basically a resonant
coil (like a mini Tesla coil) collected to a copper plate inside a plastic housing. Again, voltage and current output are unknown, but it usually
lights gas-filled tubes brighter than the automotive neon driver does.
| Quote: | | 3) What voltage/current were you using for the electrolytic cell? I think I missed it. |
That was my mistake. I neglected to mention that it's a 12VDC 1.5A wall brick adapter.
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