Changes in Pore Structure of Coal Caused by CS₂ Treatment and Its Methane Adsorption Response

Table 2

Pore volumes of the untreated and CS₂-treated coals.

Sample		Pore volume (10^−2 cm^3/g)					Percentage of pore volume (%)
		Haitian coal	Untreated	1.9993	0.4217	2.2700	2.2268	6.9178	28.9005	6.0959	32.8139	32.1897
CS2-treated	2.2954		0.4452	2.2441	2.3203	7.3050	31.4223	6.0945	30.7201	31.7632
Tucheng coal	Untreated	1.8898	0.5251	1.1272	0.7675	4.3096	43.8509	12.1844	26.1556	17.8091
	CS2-treated	4.7273	1.0533	1.2954	0.8447	7.9207	59.6829	13.2981	16.3546	10.6645
Yuni coal	Untreated	8.9632	1.2964	1.1858	0.8003	12.2457	73.1947	10.5866	9.6834	6.5354
	CS2-treated	11.5381	1.3212	1.2022	0.7659	14.8274	77.8161	8.9105	8.1080	5.1654
Linyuan coal	Untreated	5.1626	1.0588	1.4258	0.9565	8.6037	60.0044	12.3063	16.5719	11.1173
	CS2-treated	21.7167	2.4350	1.4867	0.8166	26.4550	82.0892	9.2043	5.6197	3.0868
Jinjia coal	Untreated	7.2069	0.9851	1.0027	0.6632	9.8579	73.1079	9.9930	10.1715	6.7276
	CS2-treated	7.4285	1.0097	0.9863	0.5505	9.9750	74.4712	10.1223	9.8877	5.5188

ma: macropore; me: mesopore; tr: transitional pore; mi: micropore; cu: cumulative pore.