Sciencemadness Discussion Board

Sodium Carbide synthesis(acetylene)

symboom - 1-1-2017 at 03:59

The process to produce calcium carbide is energy intensive
Theres has to be an easier way
magnesium with sodium carbonate seems doable in forming sodium carbide
Seemingly cheapest and otc method

But the reaction of magnesium and lithium carbonate
Seems to make lithium carbide

https://m.youtube.com/watch?v=cv5ph31WtbY
https://m.youtube.com/watch?v=u9t8DZke4fw


Magnesium and sodium carbonate used first then if that works
Aluminum and sodium carbonate heated together causing the aluminum to reduce the sodium carbonate to sodium carbide

[Edited on 1-1-2017 by symboom]

myristicinaldehyde - 1-1-2017 at 05:43

https://www.google.com/patents/US2802723

NitratedKittens - 1-1-2017 at 08:20

What the, that patent says the ideal temperature is 700900C
does that mean we need a tokamak to carry out the reaction?

:D

WGTR - 1-1-2017 at 09:45

This might interest you:

https://www.sciencemadness.org/whisper/viewthread.php?tid=21...

I assumed that the solid was sodium intercalated into carbon, and that the gasses on contact with water were hydrogen, but these were merely assumptions.

AJKOER - 2-1-2017 at 05:08

On a small scale, Berthelot, per Wikipedia on C2H2 (see https://en.m.wikipedia.org/wiki/Acetylene ), is said to have obtained acetylene directly by passing hydrogen between the poles of a carbon arc. Likely radical reactions:

H2 + e = H· + H·

C + H· ?→ CH·

CH· + CH· ?→ C2H2

Similarly on a small scale, I would speculate on a theoretically possible direct path to C2H2 (likely mixed with other products depending on the embodiment) and its salts, may be to react an excess of the vinyl radical with simultaneously generated hydroxyl radicals per a radical reaction assuming hydrogen abstraction:

C2H3· + OH· ?→ C2H2 + H2O

But, not sure if the carbon triple bond would be actually created here!

Example on the creation of the vinyl radical, see "Kinetics of the reaction: 2C2H4 → C2H5 + C2H3· heat of formation of the vinyl radical" by G. Ayranci and M. H. Back at http://onlinelibrary.wiley.com/doi/10.1002/kin.550150109/abs... .

The separation of the C2H2 from other organic products may not be necessary if ones interest is the ability of C2H2 to generate salts.

[Edited on 2-1-2017 by AJKOER]

Herr Haber - 3-1-2017 at 04:25

Quote: Originally posted by symboom  
The process to produce calcium carbide is energy intensive


So are the processes to produce Mg and Al !
I dont see how you could cut some costs there by using these metals.