Acetylide from NaOH + carbon - does this actually work?

Quote: Originally posted by SWIM

Sodium carbide explodes in contact with water and gets so hot it glows when it is in a CO2 atmosphere. At least according to a 1904 fire and explosion risk handbook I just checked. So quenching it to get the acetylene would have to be done pretty carefully. But 700 to 900 degrees instead of 2200 is one hell of an advantage.

From the patent the yield is between 0.4% and 4% so probably only care would be required

I wounder why the yield is so low, perhaps its not stable enough at the synthesis temperature.

Apparently judging from its reactivity the bonding is very weak so it decomposes in the furnace almost as fast as its synthesised .



From google

Quote: Originally posted by wg48temp9

Quote: Originally posted by SWIM   Sodium carbide explodes in contact with water and gets so hot it glows when it is in a CO2 atmosphere. At least according to a 1904 fire and explosion risk handbook I just checked. So quenching it to get the acetylene would have to be done pretty carefully. But 700 to 900 degrees instead of 2200 is one hell of an advantage. From the patent the yield is between 0.4% and 4% so probably only care would be required I wounder why the yield is so low, perhaps its not stable enough at the synthesis temperature. Apparently judging from its reactivity the bonding is very weak so it decomposes in the furnace almost as fast as its synthesised . From google

Quote: Originally posted by hodges

What about ammonium carbide? Seems it should exist - no idea how it would be synthesized though.

Quote: Originally posted by rockyit98

Quote: Originally posted by hodges   What about ammonium carbide? Seems it should exist - no idea how it would be synthesized though. nope . no way dude! and that all i,m gonna say except what he described is how to make sodium. 6NaOH + 2C -------->2Na + 3H2+ 2Na2CO3

Quote: Originally posted by Armus_

Quote: Originally posted by rockyit98   Quote: Originally posted by hodges   What about ammonium carbide? Seems it should exist - no idea how it would be synthesized though. nope . no way dude! and that all i,m gonna say except what he described is how to make sodium. 6NaOH + 2C -------->2Na + 3H2+ 2Na2CO3 but sodium is more reactive than carbon on the reactivity series, it isnt really possible in normal conditions such as a redox reaction. the only thing that is less reactive than sodium but that can still replace it is magnesium to my knowledge but carbon just reduces its oxidation state and if it acted as an anion in this case then the sodium carbide is a plausible case to make here

Quote: Originally posted by rockyit98

Quote: Originally posted by Armus_   Quote: Originally posted by rockyit98   Quote: Originally posted by hodges   What about ammonium carbide? Seems it should exist - no idea how it would be synthesized though. nope . no way dude! and that all i,m gonna say except what he described is how to make sodium. 6NaOH + 2C -------->2Na + 3H2+ 2Na2CO3 but sodium is more reactive than carbon on the reactivity series, it isnt really possible in normal conditions such as a redox reaction. the only thing that is less reactive than sodium but that can still replace it is magnesium to my knowledge but carbon just reduces its oxidation state and if it acted as an anion in this case then the sodium carbide is a plausible case to make here do your research before shouting out. https://en.wikipedia.org/wiki/Sodium#Commercial_production