Methane Adsorption in Anthracite Coal under Different Pressures and Temperatures—A Study Combining Isothermal Adsorption and Molecular Simulation

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Chemical shift (cm<sup>-1</sup>)</td><td class="align_center">Relative area (%)</td><td class="align_center">Peak position attribution</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">3197</td><td class="align_center">5.14</td><td class="align_center">Ring stretching vibration</td></tr><tr><td class="align_left">3295</td><td class="align_center">21.28</td><td class="align_center">OH-O stretching vibration</td></tr><tr><td class="align_left">3385</td><td class="align_center">20.72</td><td class="align_center" rowspan="2">OH-OH stretching vibration</td></tr><tr><td class="align_left">3461</td><td class="align_center">46.97</td></tr><tr><td class="align_left">3544</td><td class="align_center">5.90</td><td class="align_center">OH-<i>Π</i> telescopic vibration</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Regional content of hydroxyl group (the assignments of the FT-IR is according to [<a href="/journals/geofluids/2023/8528359/#B37" target="_blank">37</a>]).</div>

Geofluids

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Table 6

Table 6: Methane Adsorption in Anthracite Coal under Different Pressures and Temperatures—A Study Combining Isothermal Adsorption and Molecular Simulation 

Table 6 | Methane Adsorption in Anthracite Coal under Different Pressures and Temperatures—A Study Combining Isothermal Adsorption and Molecular Simulation 