ADSORPTION OF ACETONE ON HEXAGONAL NANOSTRUCYURED ZEOLITE PARTICLES

摘要

This study investigated the adsorption characteristic of acetone, a major VOCs emitted from semiconductor industry, on hexagonal nanostructured zeolite particles (HNZP) by comparing its performance with that of commercial ZSM-5 zeolite. The material analysis showed the surface area of HNZP could achieve 872 m~2 /g, which was 1.5 times of that of ZSM-5 zeolite. But the average pore size was 2.0 nm, which was 0.7 nm less than that of ZSM-5 zeolite. The adsorption capacity of acetone on the fresh HNZP was less than that of fresh ZSM-5 zeolite. On the other hand, the adsorption capacity of the regenerated HNZP materials was very close to that of fresh one, but the adsorption capacity of regenerated ZSM-5 zeolite decayed significantly. The decrease in the adsorption capacity of regenerated ZSM-5 zeolite could be due to its aluminum content would catalyze the acetone into coke, and thus block the adsorption sites.