vanBassum
Hazard to Self
Posts: 50
Registered: 16-4-2019
Member Is Offline
|
|
eU2A method for generating ammonia
Hello,
I saw an electrolytical method of generating ammonia gas from urea somewhere in this thread: https://www.sciencemadness.org/whisper/viewthread.php?tid=71... The paper can be downloaded here: https://www.researchgate.net/publication/281140022_Electroch...
It seems like a promising way of generating of a constant amount of ammonia gas. The only concern I have is the hydrogen that is also generated. That
could potentially be an explosion hazard. Have any of you had any luck recreating this experiment? I build a cell and tried out some tests but haven't
had much luck generating ammonia. If there is any interest I could post a picture of the cell but I think you guys get the idea 
|
|
|
vanBassum
Hazard to Self
Posts: 50
Registered: 16-4-2019
Member Is Offline
|
|
Well....
It turns out it doesn't work with NaOH but it does with KOH.
Now I get the very recognizable pungent odour of sweet sweet ammonia.
|
|
|
Fyndium
International Hazard
Posts: 1192
Registered: 12-7-2020
Location: Not in USA
Member Is Offline
|
|
What? I just made a liter of 35% ammonia with urea and sodium hydroxide, although I did not use electronics but just a simple heating.
|
|
|
symboom
International Hazard
Posts: 1143
Registered: 11-11-2010
Location: Wrongplanet
Member Is Offline
Mood: Doing science while it is still legal since 2010
|
|
used less chemicals the better and if Electrolysis is used ammonia generation can be finely tuned.
It would be nice if it could be made in situ such that sodium carbonate is split and the urea reacts with the sodium hydroxide as it is produced.
[Edited on 14-8-2020 by symboom]
|
|
|
Fantasma4500
International Hazard
Posts: 1677
Registered: 12-12-2012
Location: Dysrope (aka europe)
Member Is Offline
Mood: dangerously practical
|
|
urea can also be combined with ethylene glycol to make ethylamine, i heated it well but it didnt do anything, maybe half a year later i had this vial
in a box and the cap was leaking, awful stench, not sure if heating actually helps the reaction
ammonia can also be made by metal nitride with water, probably a very solid dessicant, magnesium forms a lot of nitride
CaCl2 can absorb ammonia, could possibly be used to purify it
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
