Effect of Functional Groups in Coal on the Depth of Adsorption Potential Well

Due to the complexity of internal structure natural coal and its characteristic multicomponent, depth methane adsorption potential well is nonuniform, which makes it difficult accurately evaluate capacity coal. Besides, in order find out factors affecting distribution wells coal, this paper calculated number during according Langmuir kinetics process. Coal samples with different metamorphic degrees were tested analyzed by infrared spectroscopy diffraction technology. The relationship between structural parameters functional groups depths was studied. Some main conclusions are as follows: at has multipeak characteristics. With increase degree sample, structures such aliphatic branched chain oxygen-containing break, fall off, deoxygenate. relative content hydrocarbons significantly reduced condensed into aromatic ring structures. types quantities on surface lead forces molecules gas molecules, thus samples.