A laboratory study on the adsorption of trichloromonofluoromethane on a pellet-type carbon was carried out at 298, 323, 348 and 373K. Equilibrium parameters based on Freundlich, Langmuir and Dubinin-Radushkevich equations were determined. It was found that the Dubinin-Radushkevich(D-R) equation was better fitted by the ex-perimental data of trichloromonofluoromethane on the activated carbon pellet than other two equations. In addition, the isosteric heats of adsorption were evaluated from experimental data.