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. 2024 Dec 28;14:30768. doi: 10.1038/s41598-024-80520-0

Table 2.

Organic geochemical parameters of different coal ranks.

Samples Ro, max % H/C O/C O/N H/O Molecular formula
YL 0.53 0.10 0.28 2.58 0.37 C111H136N2O23
SL 0.58 0.075 0.192 13.72 0.39 C167H150N2O24
LNC 0.80 0.092 0.18 3.12 0.44 C228H169N3O15S
QN 0.91 0.083 0.079 6.86 1.05 C202H202N2O12
ST 1.39 0.078 0.02 1.71 0.26 C197H176N2O3S
FGZ 1.59 0.076 0.014 1.143 5.44 C192H174N2O2S
LJT 1.61 0.082 0.032 3.43 2.59 C168H166N2O6
XDW 2.46 0.041 0.014 1.44 1.94 C182H116N4O4
XJ 2.18 0.048 0.012 1.71 2.20 C182H106N2O3S