Table 4. Pore Structure Parameter^a.

		pore volume (10–3 m2 g–1)		proportion of each pore section (%)
coal sample	specific surface area (m2 g–1)	Vw + Vx	Vz + Vd	Vw + Vx	Vz + Vd
D01-JM	4.26	19.75	20.52	49.04	50.96
D01-AM	4.63	18.69	33.20	36.00	63.98
H01-JM	5.28	4.8	16.79	22.23	77.77
H01-AM	2.86	6.24	12.56	33.19	66.81
D02-JM	9.62	25.04	8.07	75.63	24.37
D02-AM	7.03	27.35	42.07	39.40	60.6
D03-JM	7.17	19.65	27.25	41.90	58.1
D03-AM	4.35	17.35	37.43	31.67	68.33

^aV_w, micropores; V_x, transition pores; V_z, mesopores; V_d, macropores.