At 04:02 PM 5/30/01 -0700, John Pearson wrote:
>Questions from a laymen to a sceince guy regarding air density:
>
>How can I create the most oxygen rich air? Compress and chill it?
>
>If so, how much more oxygen can I pack into a bottle if I compress it at
>70 degrees F to, say, 100psi at 40 degrees F?

Compressing oxygen has serious explosion hazards.
Many things become explosively flammable in a compressed ox-rich
atmosphere, that you wouldn't think of being a hazard in normal ox-nitrogen
mix.

That being said, there's a form of rare earth, that absorbs nitrogen. They
use it in portable oxygen concentrators.

You could always make LOX with a hilsch tube.  Beware cryo hazards, as well
as extreme flammability.

There's a fellow who lights barbecues with LOX. Rather famous.
He says a lump of charcoal saturated with LOX is roughly equivalent to a
stick of dynamite.
http://ghg.ecn.purdue.edu/~ghg/
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