Ninja
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Carbon tetrachloride by electrolysis
Hi!
I am interested in building an apparatus for the manufacture of chloroform and carbon tetrachloride by electrolysis from
NaCl or KCl, HCl, and Ethanol (to have formiates as a side product).
Besides many different electrodes i want to experiment with Peltier-elements to freeze out products (only very easy with CCl4). But what about working
under a slithly increased pressure too?
Electrolytic manufacture of carbon tetrachloride seems to be uncommon at least, since i cannot find anything about it.
CCl4 from CHCl3 seems to be catalyzed by iodine and UV or only iodine.
What else favors these reactions?
Thanks in advance! 
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Sulaiman
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Quote: Originally posted by Ninja  | Electrolytic manufacture of carbon tetrachloride seems to be uncommon at least, since i cannot find anything about it.
CCl4 from CHCl3 seems to be catalyzed by iodine and UV or only iodine.
What else favors these reactions? |
Electrical conductivity AND greater than 11.2 volts 
[Edited on 30-1-2018 by Sulaiman]
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Aqua-regia
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I think your suggested way is not good for preparative target. Yield is poor and a lot of side reactions coming... Buy a lot of cheap bleach.
Haloform is easy peasy
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unionised
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| Quote: Originally posted by Ninja |
Electrolytic manufacture of carbon tetrachloride seems to be uncommon at least, since i cannot find anything about it.
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Do you have any reason to think it is possible?
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Ninja
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| Quote: Originally posted by Sulaiman | | Quote: Originally posted by Ninja | Electrolytic manufacture of carbon tetrachloride seems to be uncommon at least, since i cannot find anything about it.
CCl4 from CHCl3 seems to be catalyzed by iodine and UV or only iodine.
What else favors these reactions? |
Electrical conductivity AND greater than 11.2 volts
[Edited on 30-1-2018 by Sulaiman] |
Where from do you take this knowledge? Any sources?
A low pH is probably good too, since it favors the formation of nascent chlorine, right?
Nascent chlorine or use of chlorine/iodine with UV radiation seem to be able to form CCl4 form chloroform, i think. There is no source for
these abilities of nascent chlorine, but it is strong... Should be...
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Sulaiman
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11.2 V is the ionization potential of chloroform https://pubchem.ncbi.nlm.nih.gov/compound/chloroform#section...
the increased conductivity comment was partly a quip;
the conductivity of chloroform is so low that
if using common electrode topology
I would expect very little current/ionic flow,
hence very little electrolysis can occur.
But I'm guessing
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Ionisation potentials like that are measured in a vacuum, rather than solution.
Look up the ionisation potential for hydrogen...
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