Activated carbons were prepared from shell (Eucalyptus globulus), by chemically activated by impregnation with sulfuric acid solutions at different concentrations (10, 25, 40 and 60% V/V), followed a process of carbonization was performed and finally the samples were washed until constant pH. For the characterization of samples different techniques were calculated; the apparent surface area and micropore volume using N-2 physisorption was evaluated, the sample increased surface area provided was more activated acid