Synthesis of nanoporous carbon materials (NUMs) from lignin of fir wood in the presence of potassium hydroxide was carried out by varying the carbonization conditions  at 800°С . Using the methods of nitrogen adsorption at 77 K and scanning electron microscopy, the influence of conditions of lignin carbonization on the formation of a porous structure of the NUMs was studied. The obtained samples of NUMs, have specific surface area up to 3157 m²/g, pore volume up to 1.92 cm³/g, have faction of micropores up to 92.2 rel. %, average pore size of 1.88–2.43 nm and have a high sorption capacity for benzene (up to 1.41 g/g).