Gas seperation

[CrazyEwok]

Ok i know that everyone is really into making more gas (or making it more efficient) but has anyone got ways of separating the H2 and the O2? the closest i could find was a pourus electrode set up (pretty much ripping off high temp electrolysis). Any ideas?!?

[gculpex]

ionic? potential charge difference?

[mscoffman]

In normal electrolysis the gasses are obviously separate
to begin with. But HHO production with AC can cause
them to become mixed. 

If you had a oxygen sensor that could keep working
when exposed to hydrogen you could let the gasses
gravitationally separate. Gate a valve open at the top
when there was little oxygen and then close it when
the oxygen percentage was seen to rise. Then maybe
burn off any excess oxygen in the hydrogen stream
catalytically. A computer could probably do a good job
separating them based on pressure in the container
using the oxygen sensor for fine tuning.

:S:MarkSCoffman

[ResinRat2]

The boiling point of  Oxygen is approx. -183 °C. The boiling point of Hydrogen is approx. -252 °C.

The gas mixture can be physically cooled until oxygen condenses out as a liquid. There is  over a 70 degree difference between the boiling points. The remaining gas in the chamber would be hydrogen.

Not too practical for home experimentation, but it is one way to separate the gases.