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

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: March 2, 2025

Accurately assessing the adsorption and diffusion behaviors of H2, CH4, their mixtures are essential for estimating underground hydrogen storage (UHS). This understanding is critical safe efficient H2 in depleted shale gas reservoirs. Although kerogen has been extensively studied, adsorption-induced swelling remains unexplored UHS. In this study, we investigate mechanisms using Lagrangian Eulerian approaches analyze through molecular simulations. Our results reveal that presence cushion gases like which exhibit stronger than neglecting deformation can lead to an underestimation capacity by approximately 40%. Furthermore, increasing pressure makes behavior deviate from consistent trend observed with either or contracting depending on pore size. Simulations also predict self-diffusion coefficient porous 1 order magnitude higher CH4. These findings highlight importance incorporating flexibility into modeling UHS involving multiple species improve accuracy safety operations

Language: Английский

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From Rigidity to Flexibility: Understanding Ethane Adsorption and Diffusion in Shale Under Moist and Saline Conditions

Energy, Journal Year: 2024, Volume and Issue: unknown, P. 134235 - 134235

Published: Dec. 1, 2024

Language: Английский

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From Rigidity to Flexibility: Understanding Ethane Adsorption and Diffusion in Shale Under Moist and Saline Conditions

Published: Jan. 1, 2024

Language: Английский

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