Application of a Modified Low-Field NMR Method on Methane Adsorption of Medium-Rank Coals

Table 4

Experimental result of mass and amplitude of bulk methane by the modified low-field NMR method.

(MPa)	1.05	2.40	4.40	6.45	7.74
Mass (g)	0.2875	0.6718	1.2715	1.9231	2.3503
Relaxation area	3292.59	6616.73	12339.10	18419.58	21850.10