Abstract: We used sucrose as carbon precursor and sodium silicate as silica precursor, and then generated a silica gel network and sucrose copolymer by the process of heat treatment. After carbonizing and etching the silica template, mesoporous carbons were obtained, whose pore sizes were 8-25nm. The obtained porous carbons were characterized by scanning electron microscope observation and nitrogen adsorption/desorption isotherms, we found that when the sucrose/ silica mol ratio was 0.33, pH ratio of the sol solution was 3, gelling tempreture was 80℃ and carbonization temperature was 850℃, the porous carbon prepared had BET surface area of 597.63m²/g, good pore volume, and mesoporosity, and had fine adsorption properties to rhamnolipid.

Key words: porous carbons, template method, rhamnolipid, pore structure