Preparation of a mesoporous carbon membrane from resorcinol and formaldehyde

A mesoporous carbon membrane was prepared by the organic sol–gel process, ambient drying and carbonization. Resorcinol was polymerized with formaldehyde and formed a sol. The sol was cast on a porous fly-ash ceramic support by dip-coating. After ambient drying and carbonization, a carbon membrane was obtained. The carbon membrane exhibited a sharp pore size distribution with average diameter of 3 nm.