Adsorption properties of woodceramics

Gas adsorption properties of wood and woodceramics were evaluated by specific surface area (SSA), adsorption capacity for oxygen and nitrogen, and by the rapid measuring method for volatile organic compounds (VOCs). Woodceramics showed different preferences on the adsorption for gases and perfumery materials depending on the starting material, irrespective for the SSA. Furthermore, the gas adsorption properties as evaluated by the rapid VOC evaluation method differed depending on the particle size. In particular, cedar-based woodceramics 1.0-1.7 mm in size showed strong adsorption power for citral, and coarsest particles (> 4.0 mm in size) for geraniol, in which more than 99.9% of the compounds were adsorbed. About 99.7-99.8% of pulegone and menthone, and 99.0% of nerol were adsorbed by the cedar-based woodceramics 4.0 mm or larger in particle size.