No.76 Production of Activated Carbons with Large Specific Surface Area by K_2CO_3 Activation

Abstract

We produced an activated carbon with large specific surface area from the lignin mixed with urea or melamine by chemical activation using potassium carbonate. The influences of carbonization temperature on the pore structures such as specific surface area and pore volume were investigated. It was found that the mixing with urea or melamine was effective to enlarge the specific surface area. At the carbonization temperature of 1073 K, the specific surface area of the produced activated carbon became the maximum value. The activated carbon from the lignin mixed with melamine had the larger mesopore volume and the sharper micropore size distribution.