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Author Topic: Hydrogen Foam  (Read 9755 times)

Offline Mr Andrew

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Hydrogen Foam
« on: 04/12/2007 22:06:26 »
Does anybody know of a way to suspend H2 in a relatively common, hard-to-oxidize-in-the-presence-of-O2 liquid to create a sort of foam? 
« Last Edit: 04/12/2007 22:09:44 by Mr Andrew »


 

Offline Bored chemist

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Hydrogen Foam
« Reply #1 on: 05/12/2007 10:49:25 »
You can blow hydrogen bubbles in soapy water.
 

Offline lightarrow

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Hydrogen Foam
« Reply #2 on: 05/12/2007 19:24:47 »
You can blow hydrogen bubbles in soapy water.
Very interesting! Soap bubbles with H2 inside. Can you imagine what kind of tricks can you do with them?  ;)
 

Offline Mr Andrew

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Hydrogen Foam
« Reply #3 on: 05/12/2007 22:28:00 »
That'll be the last bath I ever take!!

How dense would that be?  Not very I'd imagine.  Can you create a dense foam out of hydrogen (dense in hydrogen)?  Or, even a gel?
 

lyner

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Hydrogen Foam
« Reply #4 on: 06/12/2007 14:46:04 »
When we had 'town gas' (Hydrogen and some carbon monoxide)  and I was at School, we used to make large clumps of bubbles by bubbling the gas  through detergent solution. This was not mixed with (much) air and it used to make a very impressive wall of flame when lit, rather than exploding. It was over before the teacher had a chance to turn round an see it!
We would also explode one boy's school 'attache case'.
 

Offline Mr Andrew

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Hydrogen Foam
« Reply #5 on: 11/12/2007 02:32:15 »
What, no one up on their foam chemistry?!?  I thought we had some good chemists on this forum! ;D :P
 

Offline Bored chemist

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Hydrogen Foam
« Reply #6 on: 11/12/2007 19:48:46 »
How dense do you want? A set of soap bubles made from H2 is mainly H2 by volume.
The fact that H2 is about 10000 times less dense than any solid or liquid that you are going to get hold of at room temperature rather limits things unless you are prepared to work at very high pressure.
This
http://forums2.gardenweb.com/forums/load/hypertufa/msg101259097085.html?10
looks interesing.
« Last Edit: 11/12/2007 19:52:33 by Bored chemist »
 

Offline Mr Andrew

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Hydrogen Foam
« Reply #7 on: 13/12/2007 02:29:24 »
I'm thinking of a way to store H2 efficiently for cars and such...store it in a solid or liquid so that it won't escape at relatively normal pressures and temperatures, but can still move around so ions can flow in a fuel cell.

That looks like a very intersting site.  The aluminum probably reacts to produce oxygen gas (that is if you use CaO...I'm not sure whether it's CaO or CaCO3 in concrete) or carbon dioxide.  Very neat.
 

Offline Bored chemist

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Hydrogen Foam
« Reply #8 on: 13/12/2007 16:33:52 »
The Al gives H2 by reaction with water.
 

Offline Mr Andrew

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Hydrogen Foam
« Reply #9 on: 14/12/2007 12:01:46 »
Oh yeah, I forgot...usually metals only produce H2 when they react with acids but Al is so reactive that (under correct conditions) it reacts with the amphoteric acid, water.

If you try to use Al to make a H2 foam in a liquid, would it just bubble or could you get a foam which you might use in a fuel cell?  Would you be able to make it dense enough?
 

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Hydrogen Foam
« Reply #9 on: 14/12/2007 12:01:46 »

 

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