How do pore characteristics and cushion gases impact the adsorption of hydrogen in nanopores?

What is it about?

Underground hydrogen storage (UHS) is one way of industrial-scale storage of hydrogen in geologic porous media for withdrawal on demand. The withdrawal of hydrogen from these repositories requires replacement gas (called cushion gas) to maintain pressure. CO2 and methane are two possible cushion gases. How does the presence of these gases impact the behavior of hydrogen at molecular scale? What role do the pore characteristics like surface area, tortuosity and pore connectivity play in this? We try to address these questions in this paper.

Featured Image