A pore size–segmented adsorption model was proposed to quantify methane (CH4) uptake in porous carbons under varying pressures (1–35 bar). By defining a contribution factor (kx), the model revealed that pores of 0.76–1.14 nm (dii) showed a linear correlation with CH4 adsorption above 20 bar. These contribution values shifted to 35, 54, and 11% at 35 bar, suggesting that effective pore sizes increase with increasing pressure. Atomistic computations validated the energetics of the adsorption mechanism and supported the decoupled contribution framework, offering design insights for advanced gas storage and separation materials.
- Jong-Hoon Lee
- Jaewoon Lee
- Soo-Jin Park
