Table 2: Adsorption parameters of the D-A model of methane adsorption at 298 K.

D-A modelA1A2A3A4A5A6A7A8

(mmol/g)0.450.540.590.700.660.640.520.48
(KJ/mol)5.344.445.925.146.065.224.645.76
1.381.311.941.371.631.601.381.68
Mean relative deviation δ (%)1.621.951.531.090.690.521.330.69