Effect of Functional Groups in Coal on the Depth of Adsorption Potential Well

Table 2

Elemental analysis and maceral determination parameters of coal samples.

Types of coal samples	C (%)	H (%)	O (%)	N (%)	S (%)	(%)
Anthracite	86.52	2.64	6.83	0.69	3.32	3.1
Lean coal	88.41	3.49	5.22	1.15	1.70	2.1
Coking coal	86.65	4.39	5.27	1.30	2.39	1.3
Brown coal	74.19	4.29	19.08	1.25	1.19	0.4