Abstract
Pore characteristics of charcoal materials prepared by carbonizing and activating a Japanese cedar powder impregnated with a low molecular weight phenol-formaldehyde (PF) resin were compared with those of non-impregnated wood. When the PF resin-impregnated wood was carbonized, the carbonized sample showed a clear molecular sieving effect, and, at the micrometer scale, the structure that originated from wood cell walls was maintained because PF resin covered or penetrated into the wood texture in the precursor. This charcoal material differing from the charcoal material of non-impregnated wood is expected to be applicable as a molecular sieving carbon.
