Kinetics for catalytic oxidation of dioxins and model compounds

Polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) – commonly referred to as dioxins or PCDD/F – are highly toxic chemical compounds that are unintentionally produced in high-temperature industrial processes. A promising technology for PCDD/F removal is catalytic oxidation over catalytic filters bags. This is a process step that can achieve PCDD/F removal, fly ash removal, and selective catalytic reduction of NOx all at once [1]. Due to cost and convenience, research on catalytic oxidation of PCDD/F on laboratory scale is limited and is primarily done using model compounds such as chlorinated benzenes [2]. Studies in the literature have questioned the use of model compounds for designing a catalyst for PCDD/F oxidation, as differences in the catalyst formulation may affect the oxidation of PCDD/F and model compounds differently [3].

In this work, a survey has been conducted on existing literature, extracting and comparing kinetic data for 288 data sets for the catalytic oxidation of model compounds and PCDD/F based on an assumption of first-order kinetics, in order to evaluate the similarity in kinetics for catalytic oxidation of model compounds and PCDD/F