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

Table 3

Regional content of aromatic hydrocarbons (the assignments of the FT-IR is according to [37]).

Chemical shift (cm^-1)	Relative area (%)	Peak position attribution
720	1.79	Skeleton vibration of (CH2) on the side chain of n-alkanes
748	11.28	Out of plane deformation vibration of CH in aromatics (4-5 adjacent H atoms)
771	12.29
790	26.87	Out of plane deformation vibration of CH in aromatics (3 adjacent H atoms)
804	9.24
822	20.48
834	4.14
860	2.34	Out of plane deformation vibration of CH in aromatics (2 adjacent H atoms)
875	1.51
890	9.43