摘要：Taking diatomite as the main material, the DPC was obtained by solid-phase sintering and low-temperaturecalcination craft. The study focused on the content of tourmaline to influence of materials’ microstructure,pore size distribution and the decolourization ability for malachite green aqueous solution. Samples indifferent tourmaline content were characterized by scanning electron microscopy, Hg porosimetryand so on. The results indicate that sample with 12% tourmaline has the smallest average aperture of177.5 nm and biggest specific surface area of 6.83 m 2 /g; tourmaline content is enhanced from 0% to16%, the materials’ porosity decreased from 49.3% to 36.5% and materials’ decolourization ability tomalachite green solution’s strengthens gradually. When tourmaline content is 16%, malachite-greenaqueous solution is completely decolourized in 6h and the absorption peaks disappear at 412 nm and618 nm.
关键词：DPC;
Tourmaline;
Pore Structure;
Malachite Green
