Sciencemadness Discussion Board

Lithium Hydride Preperation

APO - 8-4-2013 at 19:10

First of all, I will call it energetic due to it's high energy density and it's tendency to release large amounts of energy when reacted in general, OK? Now, I wanna know if there's a high boiling solvent that molten Lithium sinks in so that I can bubble hydrogen through it since I don't have a vacuum pump yet, any ideas?

APO - 8-4-2013 at 19:20

Also, while were're on the subject if I reacted Lithium Hydride with Aluminium Chloride, how would I separate the Lithium Chloride byproduct from the target compound Lithium Aluminium Hydride?

The Reaction goes like this:
4 LiH + AlCl3 → LiAlH4 + 3 LiCl

Ral123 - 8-4-2013 at 23:06

What are going to do with this highly reactive product? How are you going to store mixtures with it? Plain aluminium will give much better energy density. I see this compound only as a propellant, with usage of very inert oxidizer, may be lithium perchlorate.

APO - 9-4-2013 at 10:15

For one, these are novelty items I'd like to have, and two I've devised some propellants that work work well with these compounds.

caterpillar - 9-4-2013 at 13:26

Lithium hydride (lithium deiteride, more precisely) is used in nuclear weapon. Is it what you gonna produce?

APO - 9-4-2013 at 13:32

No, I have no intention of hurting people and I find radioactive stuff scary. I don't get why suddenly everyone is suspicious of me.

elementcollector1 - 9-4-2013 at 13:37

Quote: Originally posted by APO  
...Now, I wanna know if there's a high boiling solvent that molten Lithium sinks in...?

Sadly, there is not. We'd love it if we had a solvent inert to molten lithium that has a high boiling point and lower density than lithium, but it's just not happening.
If there was one, however, it would make storing lithium metal easy...

APO - 9-4-2013 at 14:50

Damnit.

APO - 9-4-2013 at 14:53

Should I bubble Hydrogen molten Lithium while in a crucible similar to this?

https://www.youtube.com/watch?v=ZqEWUw6sgpA

[Edited on 9-4-2013 by APO]

zed - 9-4-2013 at 18:05

If you have a Parr pressure reactor, lots of things become possible. Unfortunately, these vessels are seldom available at attractive prices. It used to be, usable vessels were occasionally offered for sale on E-bay, at friendly prices.

Nowadays, it is probable that E-bay has restricted the average Joe from listing such items. Thereby, all offered items, are offered by licensed dealers only. Prices are maxed out.

Sauron, once posted some interesting entrees on the synthesis of LiAlH4, via NaAlH4. If you have a Parr Pressure Reactor.......NaAlH4 is fairly do-able. Check the archives.

It is also conceivable that you can produce Lithium Hydride at ordinary temperatures, by ball milling Lithium Metal in a Hydrogen atmosphere. Check the literature.



[Edited on 10-4-2013 by zed]

APO - 9-4-2013 at 19:24

This it?

http://www.ebay.com/itm/121078090070

APO - 9-4-2013 at 19:43

This?

http://www.ebay.com/itm/160930633791