Effects of Maceral Compositions of Coal on Methane Adsorption Heat

Table 3

Slope of each fitting line of lnP-1/T and corresponding isosteric heat of adsorption obtained from adsorption isotherms.

Molar adsorption amount (mmol/g)	Slope	Isosteric heat of adsorption (kJ/mol)
0.1	−2138.6	17.78
0.2	−2221.1	18.47
0.3	−2303.5	19.15
0.4	−2385.9	19.84
0.5	−2468.4	20.52
0.6	−2550.8	21.21
0.7	−2633.3	21.89
0.8	−2715.7	22.58
0.9	−2798.1	23.26
1	−2880.6	23.95