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budullewraagh
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| Quote: | | No hard feelings, k? |
no worries at all.
actually, the post above reminded me; NH3(l) reduces alkali metals to form -1 anions. it makes me wonder; if you added, say, NaCl to NH3(l), would
you get Na(s)?
if so, i'm heavily considering distilling some NH3 to 100%, collecting the gas then pressuring it like crazy in a container filled with NaCl
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BromicAcid
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Won't work as the anion is still there, it will dissolve though, I think NaCl is slightly soluble in NH3. But it will not form the beautiful
blue solutions associated with solvated electrons.
Reverend Necroticus Rex, LiCl is only slightly soluble in pyridine, this was mentioned in the thread making lithium metal by one of our members that attempted electrochemical production to produce lithium in this manner. I don't know if the
difference in electronegativity is enough to force this reaction foreword without additional prodding.
[Edited on 8/2/2004 by BromicAcid]
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Saerynide
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Today I dissected my second Li battery. This time, when I had unrolled the whole coil, all the Li was still silver. I wanted to store the Li in a
fresh container of mineral oil, so I quickly pulled it out and dunked in the new container. Unfortunately, there were air bubbles stuck to it and I
didnt realise, so about 10 min later, when I looked at the Li again, it was brownish.
Right now, its still kinda streaming bubbles, and its almost 3 hours later  How
much air is trapped in this wad So much for silver Li...
"Microsoft reserves the right at all times to monitor communications on the Service and disclose any information Microsoft deems necessary to...
satisfy any applicable law, regulation or legal process"
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The_Davster
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I don't think that air in the wad is the cause of the streams of bubbles. I think the bubbles are a result of you mineral oil still having a
small content of water.
When I made some Na a while back, when I placed it in mineral oil, I too got those bubbles.
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Cyrus
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If you stored the mineral oil with some CaCl2 or MgSO4 (anhydrous of course) might that help dry the oil?
I have never tried it, as the mineral oil I used was brand new- no water. In the future it might be useful though!
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chemoleo
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It's not just the water in the oil, but possibly components of the oil reacting too.
For my potassium I used lamp oil (clear low chain paraffins, as it said on the back), and the potassium hasn't changed appearance to half a year
ago.
Never Stop to Begin, and Never Begin to Stop...
Tolerance is good. But not with the intolerant! (Wilhelm Busch)
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budullewraagh
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their cations very well may be replaced by the Li
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Cyrus
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True, but I would dry the oil, filter/remove out the drying agent, and then put in the lithium.
Now if the drying agent sank, this would not be a problem as lithium floats ...
unless the drying agent was soluble in mineral oil, but I doubt CaCl2 is (enough to be a problem).
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bfesser
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Sorry to resurrect an old thread, but I thought it more appropriate than starting yet another Li from batteries thread. Has anyone here tried using a
pipe cutter (the type used by plumbers to cut copper pipes, where the pipe is pressed by rollers onto a hard disc and rotated to score it until it's
cut) to open the case of the battery? If it worked, it would most likely be quicker, cleaner, and easier than using a hacksaw or peeling with pliars.
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DJF90
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I can imagine it would work very nicely. Although I havent done it myself (with a battery), cutting copper pipe with one was easy and clean. Batterys
could be cut right through the middle (careful to only cut the outer casing), the casing removed as two halves and then the foil unrolled after
coating with mineral oil (or unroll it under oil),
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bfesser
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I was thinking more along the lines of cutting right below the constriction. In my experience with cutting copper and brass pipes with those cutters,
they tend to crush a bit before they cut. If the cut could be made high enough, perhaps it would avoid crushing and possibly shorting the foil. I'm
not brave enough to try it at the moment. Anyone got the balls to try it first?
[edit]
I'm also concerned that the slight crushing of the case would make it difficult to pull the roll out.
[Edited on 7/4/09 by bfesser]
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benzylchloride1
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What size of lithium batteries have the most lithium in them for the least cost? I want to prepare butyl lithium in ether for some up coming
synthesises. I disassembeld a older D size lithium battery several years ago and obtained a large amount of lithium foil. I kept the lithium under
xylene and used a paper towel to prevent exposure to the atmosphere. Within several months, the lithium had decomposed to a white-gray colored mass.
What is the best method for storing the lithium extracted from batteries? I have not seen any of the D sized batteries in local stores.
[Edited on 4-7-2009 by benzylchloride1]
Amateur NMR spectroscopist
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DJF90
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Crushing of the pipe/battery should be minimal if you increase the pressure very slowly with respect to the number of rotations you do. To cut a
standard copper pipe, I would expect about 20-30 rotations should be about right, and the same should be attempted for the battery. You can easily cut
in 7-10 rotations, but the cut is poor (aforementioned crushing). You cant cut right at the top of the battery; its hard to explain why, but you need
enough pipe either side of the blade in order to cut - at least 1cm on each side (although you need more on one side so you can hold it - a battery
should probably be held gently in a vice and then cut as far to one end as possible (I expect about 10-12mm from the top or so).
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The_Davster
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Under mineral oil, in a jar completely filled with oil (ie no head space of air), followed by inverting the jar to keep air from diffusing in through
the cap.
[Edited on 4-7-09 by The_Davster]
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