关键词:

二噁英, 苊, 金属化合物, 催化剂

Abstract:

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℃.

Key words:

二噁英, 苊, 金属化合物, 催化剂