The addition of mesoporosity to activated carbon fibers by a simple reactivation process

The addition of the mesoporosity to activated carbon fibers (ACF) (A10) using a reactivation process was investigated. The A10 samples were reactivated with Na2HPO4, Ca(NO3)2, and K 2CO3. The porosity change of the samples were investigated using N2 adsorption at 77K using a volumetric method. It was found that the use of Na2HPO4 and Ca(NO3)2 had added mesoporosity to pitch-based ACF without destroying of the original microporosity. The results show that the reactivation can be controlled to produce optimum pore structures of micropores and mesopores.