Research Article
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 cm3/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 |
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ma: macropore; me: mesopore; tr: transitional pore; mi: micropore; cu: cumulative pore.
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