956543.fig.004a
(a)
956543.fig.004b
(b)
956543.fig.004c
(c)
956543.fig.004d
(d)
956543.fig.004e
(e)
956543.fig.004f
(f)
956543.fig.004g
(g)
956543.fig.004h
(h)
Figure 4: Methane adsorption isotherms obtained by applying the D-A model at 298 K, 313.15 K, and 328.15 K, respectively. (a) A1, (b) A2, (c) A3, (d) A4, (e) A5, (f) A6, (g) A7, and (h) A8; solid line, fitted by the D-A model.