Abstract: The experimental results of carbon dioxide and nitrogen separation on ceramic membranes impregnated with ionic liquids [Emim][Ac] (1-ethyl-3-methylimidazolium acetate) and [Emim][BF4] ((1-ethyl-3-methylimidazolium tetra fluoroborate) are presented. Ceramic membranes made by Inopor were investigated in 20-60°C and in the pressure range 1-7 bar. The ionic liquid was introduced into ceramic support by coating method. It was found, that prepared SILMs are characterized by small mass fluxes and high selectivities.