I had recently asked this question, and due to the comments and general consensus of safety concerns, I decided to re-ask the question, attacking the problem from another angle.
I need to store a relatively large amount of Hydrogen in a small (12 cc) Aluminum container at about 1000 psi. The problem is not the generation of the hydrogen, nor the transfer of the hydrogen into the container at that high pressure, but how to extract the hydrogen out of the container without using a pressure regulator.
I am afraid that the container is too small for a pressure regulator to fit in it, and the whole device has to be small on the outside, so one cannot fit it on externally...
The output pressure I desire would be about 200 psi
An Idea: (I'm an Electrical Engineer, don't laugh!)
Emulate Vapor Pressure
Gasses like CO2, Butane, and Propane have relatively low vapor pressures, allowing them to form a liquid at reasonable pressures. At about 800 psi, CO2 will form a liquid, making it so that any container holding liquid CO2 will let out CO2 at that somewhat constant 800 psi of pressure until there isn't enough CO2 to keep itself in liquid form. Hydrogen, however, will not do this because it's vapor pressure curve is far too sensitive. It would have to be cooled down to some ungodly temperature, which is not an option:
I was wondering if I could somehow emulate this behavior by possible adding something to mix with the hydrogen and change it's vapor pressure. Is this even possible?
Flow rate doesn't directly matter, but the more flow the better.