# Is there a such thing as a reburnable gas or can one be created?

I want to know is there a such thing as a gas that can be reburned multiple times?

• What you essentially asking for is free energy. This is not possible. – bon May 25 '16 at 11:58

Incomplete combustion products, like carbon monoxide, can be burned to give the complete combustion product $CO_2$. This would however then not be the same gas as was (incompletely) burned to give the carbon monoxide.