Structural Characteristics and Application in Cigarette Filter of Castor Based Porous Materials

Porous materials with high specific surface areas was prepared by a combined method of microwave drying carbonization and activation processes, in which castor rhizome was used as carbon source, and KOH was used as activator, respectively. The porous material was added to the cigarette filters and the adsorption performance of the filter composited porous material was studied. The results showed that: the material had the specific surface areas and mesoporous proportion as high as 2079.25m2 /g and 79.10%, respectively. The material was activated carbon material with multi-porous structure. Compared with the control cigarettes, the filter composited porous materials could reduce the tar and seven hazardous substances of cigarette mainstream smoke, which decreased by 12.71%, 8.79%, 21.59%, 3.90%, 3.85%, 19.17%, 3.80% and 29.75%, respectively.