Controlled chemical pressurization formula

[Wildbeeman]

TL;DR

Looking for an inert gas chemical reaction formula to pressurize vessels of a known volume to a specific pressure

I have spent years physically charging high pressure bottles with multi staged bicycle pumps and spent large sums of money on electric high pressure air pumps not unlike a scuba tank air compressor.

Pressure’s can be as high as 4500 PSI .
The pressurized bottles are usually 300 to 500 cc’s.
I imagine using a controlled 2 part (or more) chemical reaction that would cause a repeatable inert gas pressure when used in a bottle with a known volume.

I’m thinking in terms of a formula that amount of X when mixed with amount of R will pressurize a 500cc bottle to 4500 psi.
An instant rise in pressure would be undesirable due to safety concerns however may still be usable.

I’m interested in hearing any feedback that will help in my quest to find a solution .
Thank you
Wildbeeman

 

[Baluncore]

Welcome to PF.

The true inert gasses don't undergo chemical reactions, which is why they are inert. So the gas must be non-reactive with the bottle material. What is that material?

To what range of temperature will the bottle be subjected?

 

[Wildbeeman]

Welcome to PF.

The true inert gasses don't undergo chemical reactions, which is why they are inert. So the gas must be non-reactive with the bottle material. What is that material?

To what range of temperature will the bottle be subjected?

Thank you for responding
The bottles are made of various materials aluminum ,titanium ,SS and carbon fiber
Some even use brass. Their are orings envolved as well.
All manner of ambient temperatures not to much above 100 F or below -10 and more like 50 to 90 F

 

[Baluncore]

The bottles are made of various materials aluminum ,titanium ,SS and carbon fiber
Some even use brass. Their are orings envolved as well.

There are still too many unknowns in the necessary reasoning.
Why do you need to maintain pressure in these different material bottles?

 

[Wildbeeman]

The pressure in the bottles is decreased as it is used so the pressure will decrease to say 2500 from 3600 (just an example) no one takes the bottle pressure all the way down to 0 . The bottles must be recharged back to 3600 from 2500
Most bottles are made of steel or aluminum. But carbon fiber is becoming more popular.
I feel like in today’s world there must be an easier way to charge these bottles.
I mentioned inert gas.
Not looking for anything combustible, corrosive or poisonous.