Research Article
Study on H2S Occurrence in Low Sulfur Coal Seams
Table 2
Distribution of sulfur-containing functional groups before and after H2S adsorption in SP coal.
| | Coal samples | Functional groups | Peak position (eV) | Content(%) | Coal samples | Functional groups | Peak position (eV) | Content(%) |
| | Before adsorption | FeS, FeS2 | 161.91 | 1.19 | After adsorption | FeS, FeS2 | 161.40 | 4.98 | | Thiol sulfide | 162.44 | 2.79 | Thiol sulfide | 162.66 | 1.33 | | Thiophene | 164.05 | 57.45 | Thiophene | 164.10 | 50.39 | | Sulfoxide | 165.98 | 13.10 | Sulfoxide | 165.93 | 13.00 | | Sulfone | 168.65 | 19.11 | Sulfone | 168.23 | 18.42 | | Sulfate, S | 170.77 | 6.36 | Sulfate, S | 170.13 | 11.79 |
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