We synthesized one kind of hexagonal mesoporous carbon (CMK-3) using hexagonal SBA-15 mesoporous silica as a template. The surface area of the CMK-3 is about 950 m(2)/g, and pore is uniform with a size of 3.90 nm according to the N-2 isotherm curve. The amount of adsorbed methane gas is 81.35 mg/g {= 117.33 ml (STP)/g} at the high pressure 35 kg/cm(2) at room temperature 298 K. The experimental results satisfy an extended Dubinin-Radushkevitch (DR) {1n N = 1n N-L -(DeltaG/betaE(o))2} plot even in the mesopore range. (C) 2004 Elsevier B.V. All rights reserved.