j_sum1
Administrator
Posts: 6320
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
Lithium nitride
Does anyone have any experience with lithium nitride?
I have some lithium rods that are very old and have been stored pooorly. The outer 1mm of the rods is a dark grey crusty material that crumbles off
when the rods are bent. My assumption is that this crust contains quite a bit of Li3N as well as oxide and hydroxide and intrained metal.
Looking at the physical properties it would seem to be a straightforward process to separate relatively pure lithoim out by melting: probably with
inert gas and a hydrocarbon to separate the layers.
Next question is how to isolate the Li3N. It is supposed to be a purple-red colour. I can test for its presence by dropping a little in water to see
if ammonia is produced. And if ghere is some... Well, any ideas?
[Edit - saving face on a novice error.]
[Edited on 9-12-2020 by j_sum1]
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
I think your '3' is in the wrong spot. Presumably you don't have lithium azide?
Edit: sorry couldn't help myself, I just get so excited when I see N3.
[Edited on 9-12-2020 by B(a)P]
|
|
|
j_sum1
Administrator
Posts: 6320
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
Quote: Originally posted by B(a)P  | I think your '3' is in the wrong spot. Presumably you don't have lithium azide?
Edit: sorry couldn't help myself, I just get so excited when I see N3.
[Edited on 9-12-2020 by B(a)P] |
Not once but twice. I must be a lot more tired than I thought. Good thing I am not in the lab at the moment.
I sm going to have to edit that before someone notices: just to save mysekf dome embarrasment.
|
|
|
clearly_not_atara
International Hazard
Posts: 2787
Registered: 3-11-2013
Member Is Offline
Mood: Big
|
|
Don't worry yoursekf too much, lithoim is cheap. But maybe get dome sleep.
Apparently the reaction of Li3N with CO2 can give C3N4. This is a pretty cool trick I would think: it won't isolate Li3N, but you could simply grind
the unfused materials, suspend in a hydrocarbon and bubble CO2. I'm not sure if Li2O/LiOH present will affect the result, though.
https://pubs.acs.org/doi/10.1021/jp205499e
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
