Modeling the pore structure of coal

The predictions of the random‐pore model, and various other models formulated here, are compared with experimental data for the uptake of methane by coal. It is found that the most appropriate is a modified model considering coal to be comprised of microporous grains, with the random‐pore model holding for the micropores in the grains. The new model still predicts the same reaction behavior as the random‐pore model.