jonw

Aluminum foil and Sodium Hydroxide works really well. I did an experiment last spring and got everything from lowes (except the aluminum foil I got from Dollar General). I built a chamber out of PVC pipe (sealing one end and putting on a twist on cap on the other. I drilled a small hole for pressure release and then installed a short pipe on one side with a valve. I then put water in it (filled about 1/2 way), about 3 or 4 balls of aluminum foil and a cup of sodium hydroxide (my local Lowe's stocks it in the plumbing section..used to remove clogs). Screwed the top on and opened the valve. Within seconds steam started coming out of the valve. I lit it and had a small flame for about twenty minutes. If you do the same thing be very careful. I would also recommend building a second chamber filled with mostly with water to filter out the aluminum oxide.

cyb0rg777

I have'nt done this for a long time but I saw a video a while back you might like to see. If you don't want to see the whole thing the invention I was thinking of starts about 20 min.

http://video.google.com/videoplay?do...&q=free+energy

The narator says it takes a half an amp at high voltage, they don't say how high. He also says it runs at 20khz. Maybe this will give you some ideas for experiments.

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theinfamousbob

I think that's assuming standard temperature and pressure...I can't remember what the pressure is (1 atm?), but it's 0*C...

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bizzareodave

Sorry I haven't read the rest of the posts so this may be a repeat,

This is what I do when I want to make hydrogen...

2Al(s) + 2NaOH(aq) + 6H2O(l) ---> 2Na(Al(OH)4)(aq) + 3H2(g)

Add Aluminium to Caustic soda and Water and collect the gas...

Note: Alot of H2 is generated this way quite quickly. Becareful as the hydrogen may explode if you heat it too much and you'll end up with Water again, and a charcoal face... =P

Sceadwian

Be careful whenever adding a caustic soda concentration to water! It creates heat! So do it slowly.

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rowling

I was looking for an idea for a science project using hydrogen from aluminum as an alternative fuel source. The above project has captured my interest. A few questions from a self-declared rank amateur, if you don't mind.

What dimensions of pvc was used?

To filter out the aluminum oxide, would you put the inlet near the bottom / lower part of the second tube and an outlet at the top, causing the hydrogen to pass through the water and have the water act as a filter?

What do you think about using a pressure relief valve in lieu of the drilled hole? Is a pressure relief valve necessary?

Thanks

Glen.

Sceadwian

Keep in mind that all aluminum has to be electroplated out of an ore sollution. Anything that uses aluminum as the raw material for the creation of hydrogen won't be able to even get back the energy required to create that aluminum in the first place.. It's one of the if not the most recycled metal I know of because of that. The energy required to reprocess it is many times less than it takes to concetrate it from ore.

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tytower

I would suggest that it also has to do with its low melting point
Lead, being a bit lower, is also a candidate for that title of most recycled

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audioguru

Very bad. Nuclear fission? The atomic bomb.
Lots of kids have nuked their cities by experimenting with electrolysis and the voltage was too high.

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Overclocked

1ATM=76Torr=760 Hg/mm

I got my hands on some NaOH at walmart , It has Sodium Nitrate in it (which could prove useful...). It also has small bits of Aluminum in it.

steven

im doing great extracting hydrogen and oxygen from water[ hydroxy gas ], and the simplest circiut i used for it . was a flyback driver circiut . with one modification to it , this driver circiut push pull type circiut sure dose great and in all my world wide serches on the net for some simpler way of doing it , this really takes the cake and im suprized no one has tried this one

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mneary

A mixture of Oxygen and Hydrogen is incredibly unstable, easily ignited by the tiniest spark. For safety, you have to keep them separated until it's time to use their energy.

Stronghold_2

Water is a bad conductor of heat and electricity. As a result it needs to be acidulated before it is decomposed by electrolysis, which is the only way it can be decomposed. Hence, we generally use Hydrochloric Acid to acidify the water so that it may conduct electricity. When this water is put in a Hoffman's Voltameter and the circuit is completed, the electricity splits the water into oxygen and hydrogen, which collect at the positive and negative limbs respectively due to their charges. The dissolved acid does not decompose as it is unaffected by electricity. It remains dissolved in the water which does not decompose, after the experiment. Hence we have the formula:

[2(H2O) + HCl] > electricity > [2(H2) + O2] + HCl

Hero999

Not just acidified but ionised. You could use an alkaline substance like NaOH and it would still have the same effect.

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Thunderchild

perhaps salt water has something to do with it ?
try using battery acid thats what we did at school I can't remember which tube the teacher lit but he demonstrated the burning of either the oxygen or the hydrogen I forget which

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