xxxxx - 22-12-2005 at 11:16
i was doing some calculations and it turns out that the dehydration of acetaldehyde to acetylene is much less endothemic and occurs at a lower
temperature that the pyrollisis of hydrocarbons or the production of calcium carbide. there are two us patents regarding the production and
purification of acetylene from acetaldehyde (us 2,377,025 and us 1,938,991) and yet the process is not used commercially, as far as i know. maybe
someone could explain why this is.
Nicodem - 22-12-2005 at 15:06
The patents you refered have nothing to do with the production of acetylene from acetaldehyde. As far as I know there is no one step organic reaction
able to dehydrate an aldehyde to an alkyne. Even if a suitable reaction would exist, such a process would be an economical nonsense while the reverse
reaction, the production of acetaldehyde from acetylene might be (or might have been) profitable.