The effects of lithium content (0.75%, 3% and 6% Li+) and calcination temperature (400, 500, 600 and 700 °C) on different surface properties of Co3O4 were investigated. The various texture parameters of pure and doped oxide samples were computed from data on nitrogen adsorption at 77 K.The dissolution of monovalent lithium ions in the Co3O4 lattice at temperatures equal to or greater than 700 °C was accompanied by a marked decrease in the surface area, total pore volume and most probable pore radius of the catalyst. In contrast, doping in the temperature range 400 – 600 °C led to a marked increase in the specific surface area of Co3O4; this attained a maximum value at 500 °C (a 94% increase). The most probable pore radius increases for the oxide doped with 0.75% Li then decreases with increasing amount of dopant ions. The total pore volumes of all doped oxide samples are smaller than those measured for pure oxide specimens.The possible mechanisms of doping of Co3O4 with lithium ions are discussed.