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Author: Subject: Extract Lanthanum from Mischmetal.
elementcollector1
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[*] posted on 29-8-2012 at 20:41
Extract Lanthanum from Mischmetal.


1. Dissolve in HCl.
2. Precipitate oxalates, Mg and Fe will stay in solution.
3. ???

How do I separate lanthanum from cerium? I know it has to do with the ability of cerium to form an IV oxidation state, but I have no idea as to how that helps.




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[*] posted on 30-8-2012 at 02:06


Search for cerium ammonium nitrate
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[*] posted on 30-8-2012 at 04:09


Mischmetal contains more than just Ce and La: there's at a minimum a good dollop of Nd in there, probably also Pr. Separating these is a nightmare...



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[*] posted on 30-8-2012 at 11:33


In 1-5% amounts, yes. Recrystallization could remove that.



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[*] posted on 30-8-2012 at 12:32


You have a CoA of your metal?




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elementcollector1
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[*] posted on 30-8-2012 at 12:40


No, that's just the average amount I found after some research. (I wish I knew a place with CoA's...)

EDIT: If anyone does know the percentage amounts, these are rods of mischmetal from magnesium firestarters.


[Edited on 30-8-2012 by elementcollector1]




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[*] posted on 30-8-2012 at 13:17


Quote: Originally posted by elementcollector1  
No, that's just the average amount I found after some research. (I wish I knew a place with CoA's...)

EDIT: If anyone does know the percentage amounts, these are rods of mischmetal from magnesium firestarters.


[Edited on 30-8-2012 by elementcollector1]


Also common lighter flints. Interestinly this metal is commercially produced by electrolysing the anhydrous RE chlorides mix (in a salt eutectic).




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[*] posted on 30-8-2012 at 15:00


I have a good book on the subject but it seam to be a too big document for the forum. I'm actually working on a similar project that this one and already have good result for cerium extraction, the problem is that I'm running out of ammonium salt hence the hydrolisis of urea thread.



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[*] posted on 31-8-2012 at 05:57


Plante: if you really want make some NH3 for ammonium salts production, get a NPK fertiliser and treat it with strong alkali. And crude (NH4)2SO4 garden grade you should find at any decent garden centre...



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[*] posted on 31-8-2012 at 13:06


If you use ammonium nitrate, the byproduct is sodium or potassium nittrate (and we all know how much fun those are...)



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