In order to understand the effect of different metal compounds on polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) formation from polycyclic aromatic hydrocarbons (PAHs)

a series of experiments were conducted with different metal compounds as catalysts and acenaphthylene (AcPy) on a fixed-bed reactor.X-ray diffraction and thermogravimetry were made to monitor the reaction.The experimental results revealed that PCDD/Fs from PAHs were mainly formed by de novo synthesis.Without the presence of Cl2

most of cupric chloride were reduced to cuprous chloride.Metal chloride offered chlorine through metal complex.CuCl2 and FeCl3 played a similar role in activating the formation of organic chlorinated compounds.AcPy could form dioxins or other chlorinated compounds catalyzed by CuCl2 at 150—200℃.