Sorption kinetics of benzene vapor onto organobentonites medified by cationic surfactantcetyltrimethylammonium bromide(CTMAB) was discussed.Results indicated that the sorption wasthe first order reaction r = KvCo,the sorption rates depended on initial concentration of benzenevapor,Sorptive equilibrium has been achieved within 12 hours at 277-317K.The Kv was shownto be correlated with the temperature (T).The activation energies were ranged from 9.50kJ·mol-1 to 17.92kJ·mol-1.