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Author: Subject: making Na(AlH4)
sniper
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[*] posted on 22-11-2005 at 15:37
making Na(AlH4)


Has anyone an idea about making
NaAlH4, I need it really.


E.b.C: spelling.

[Edited on 24-11-2005 by chemoleo]
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stygian
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[*] posted on 22-11-2005 at 15:40


Assuming its anything like LiAlH4, it requires sodium hydride and aluminum hydride.
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[*] posted on 22-11-2005 at 15:42


React sodium hydride with aluminum trichloride (anhydrous) I'm sure there is a procedure somewhere out there for the more common lithium aluminum hydride from which you can work with that as a general guide. Please put more effort into your post next time, things like Na(Alh4) hurt my eyes, it's NaAlH<sub>4</sub> more searching before hand will work as well.



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wink.gif posted on 23-11-2005 at 13:01


"Na(Alh4), i need it really."

Just in case, a word of warning: not to be taken internally.




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[*] posted on 24-11-2005 at 09:00


thank you at all!

I just want to notice that i need NaAlH4 to run those reactions

1).

2NaAlH4 + KClO4 ----> Na2O + Al2O3 + KCl + 4H2

2).

6NaAlH4 + 2C(NO2)4 -----> 3Al2o3 + 3Na2O + 2CO2 + 4 N2 + 12H2


you mean that i will have this reaction

NaH + AlH3 ---> NaAlH4

well;

but what about this soduim hydride ?

can we get it by :

2Na + H2 ---> 2NaH ( to get soduim we must electrolyse,it is too hard to get)

or

2NaOH ----->(temprature) 2Nah + O2 (it looks stupid!!!)

how can we get soduim hydride from soduim hydroxyde ?

or

Na2O + something ----> NaH + something ???

Anyway I need some advise to get this reactif( NaH , ALH3 )
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[*] posted on 24-11-2005 at 10:04


You want this just to make sodium oxide?

Sodium hydride from sodium metal and hydrogen, at high temperature, in absence of oxygen. You just might be better off buying it.

If it's hydrogen you're after, there are better ways.
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[*] posted on 24-11-2005 at 15:27


Thanks!
but in my country i can't buy soduim metal
it does'nt exist in the "market"
so anythig will be homemaking

at all the problem now is fixed :

just to get soduim metal.

and i didn't look for souduim oxydes
because the reaction 1 & 2 itsselfs are
the reaction of propulsive mixture for rocket and this just what i m looking for!
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[*] posted on 25-11-2005 at 18:50


Just stick with regular old flash powder KClO4 + Al. I don't think its worth the time to go all through all that crap but thats just me. Or if you wanted a yellow colored flame you could use soidum perchlorate, sodium bi/carbonate and or any other sodium compound.

Maybe aluminum hydride might be worth your time. Or how about ball milling some magnesium in a hydrogen atmosphere.

This is just me assuming your into pyrotechnics;)

[Edited on 26-11-2005 by DeAdFX]
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