Hydrogen Production

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Hydrogen Production

Postby Gigolo » Sun Oct 05, 2014 8:02 pm



That is Na (sodium) + H2O = NaOH (sodium hydroxide) + ½ H2 + 140 kJ/mole.

Sodium can be produced from the sodium hydroxide, via the Castner process:

Image

Note that Castner also produces hydrogen.

The 140 kJ/mole offsets the energy required for Castner.

You basically have a cycle which only requires water. Sodium hydroxide does not react with iron. It uses less water than fracking and you later get the water back.
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Re: Hydrogen Production

Postby art0hur0moh » Wed Oct 22, 2014 12:45 pm

You can also get the metal simply distilling sea water... Salt...
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Re: Hydrogen Production

Postby art0hur0moh » Wed Oct 22, 2014 12:51 pm

Cheeper using electrolisis. Even cheeper using the new generation of Russian nuclear reactors. Hydrogen is a by product and renders plutonium safe.

Better than the old military munition production reactors.
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Re: Hydrogen Production

Postby Gigolo » Sat Nov 01, 2014 12:29 am

The point about going via Castner is you get a cycle. The sodium is produced from sodium hydroxide. The sodium/water reaction then produces sodium hydroxide.
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Re: Hydrogen Production

Postby Gigolo » Sat Nov 01, 2014 1:57 am

Also, no chlorine via Castner.
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Re: Hydrogen Production

Postby calitom » Sat Nov 01, 2014 6:46 pm

Gigolo wrote:

That is Na (sodium) + H2O = NaOH (sodium hydroxide) + ½ H2 + 140 kJ/mole.

Sodium can be produced from the sodium hydroxide, via the Castner process:

Image

Note that Castner also produces hydrogen.

The 140 kJ/mole offsets the energy required for Castner.

You basically have a cycle which only requires water. Sodium hydroxide does not react with iron. It uses less water than fracking and you later get the water back.

uses less water than fracking?--are we comparing chemical processes to mechanical processes now? kinda pointless
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Re: Hydrogen Production

Postby Gigolo » Sun Nov 02, 2014 10:31 am

That was a kind of pointless pseudo post.
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Re: Hydrogen Production

Postby calitom » Sun Nov 02, 2014 5:45 pm

Gigolo wrote:That was a kind of pointless pseudo post.


your mentioning of fracking when it has nothing to do with this was the issue
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Re: Hydrogen Production

Postby Gigolo » Sun Nov 09, 2014 5:25 pm

calitom wrote:
Gigolo wrote:That was a kind of pointless pseudo post.


your mentioning of fracking when it has nothing to do with this was the issue
Fracking uses water. The hydrogen production described uses water. Are you certain that which uses less is not an issue?
The other issue is the fracking water is polluted.
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