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This study aimed to determine the effects of high-rank coal chemical properties on CH4 adsorption capacity. A total of 24 core samples of anthracite from 11 coalbed methane wells in southern Sichuan Basin (China) were examined systemically using maceral analysis, proximate and ultimate analyses, total sulfur content test, and CH4 isotherm adsorption experiment. Results show that vitrinite group macerals...