Adsorption-Induced Deformation in Microporous Kerogen by Hydrogen and Methane: Implications for Underground Hydrogen Storage.

ABSTRACT: Accurately assessing the adsorption and diffusion behaviors of H₂, CH₄, and their mixtures are essential for estimating underground hydrogen storage (UHS). This understanding is critical for the safe and efficient storage of H₂ in depleted shale gas reservoirs. Although H₂ adsorption in kerogen has been extensively studied, adsorption-induced swelling remains unexplored in UHS. In this study, we investigate adsorption mechanisms using Lagrangian and Eulerian approaches and analyze diffusion in kerogen through molecular simulations. Our results reveal that in the presence of cushion gases like CH₄, which exhibit stronger adsorption than H₂, neglecting kerogen deformation can lead to an underestimation of storage capacity by a

SUBMITTER: Babaei S 

PROVIDER: S-EPMC11912540 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature