shows properties typical to microporous materials, the samples 1C and 2C involve hierarchical microporous -mesoporous structure. This conclusion is further supported by the NLDFT pore size distribution calculations showing significant share of pores with width > 0.9 nm for materials 1C and 2C while most of the pores shown for material 3C are around 0.5 nm (Figures ). The H2 adsorption experiments (at 77 K) for 1C, 2C and 3C demonstrated their relatively high adsorption capacities of 150.0, 226.4 and 270.7 cm3/g, respectively (Figure ). Further gas adsorption studies of materials 1C, 2C and 3C involving CO2 and CH4 revealed capacities of 78.6, 108.7 and 134.9 cm 3 /g (adsorption of CO2 at 0 °C); 51.6, 68.4 and 82.0 cm 3 /g (adsorption of CO2 at 25 °C); 33.3, 48.0 and 58.3 cm 3 /g (adsorption of CH4 at 0 °C); 21.9, 31.0 and 37.7 cm 3 /g (adsorption of CH4 at 25 °C), respectively (Figures ). In comparison to the similar materials reported earlier, the developed porous carbon materials 1C, 2C and 3C are characterized with relatively high porosity and promising gas adsorption properties. For example, application of other BTC-based MOFs including transition metal centers (Mn, Co, Ni, Cu, Zn, Cd) as sacrificial templates in pyrolysis was reported to yield porous carbon materials with BET surface areas ranging from 86 to 1558 m 2 /g depending on the precursor type. Similar materials based on K-BTC and Mg-BTC coordination networks as precursors showed hierarchical porosity and BET areas of 1192 and 370 m 2 /g, respectively.