Visualization of Gas Diffusion-Sorption in Coal: A Study Based on Synchrotron Radiation Nano-CT

Table 1

Langmuir constants.

Gas	Adsorption				Desorption
	XZY		TS		XZY		TS
	VL (ml/g)	PL (MPa)	VL (ml/g)	PL (MPa)	VL (ml/g)	PL (MPa)	VL (ml/g)	PL (MPa)
CH4	12.41	2.31	11.55	5.35	11.45	1.44	7.94	1.01
CO2	27.80	1.46	25.71	2.03	26.36	1.04	22.87	1.12