Oxidation of chlorinated hydrocarbons over Pt–Pd-based catalyst: Part 1. Chlorinated methanes

Abstract

The activity of Pt–Pd-based catalyst manufactured on a monolithic metallic support was tested in the oxidation of selected chlorinated hydrocarbons. Chlorinated methanes were found to be the most catalytically reactive compounds. To find out the parameter conclusively influencing the ability of catalytic destruction of oxidized compounds, the atomic excitation energy, as well as the dissociation energies of CCl and CH bonds in oxidized molecules, was calculated. The catalytic reactivity of chlorinated methanes increased with the decreasing energy for the CCl bond, and the decreasing number of CH bonds in the molecule. CO2 and HCl were detected in the flue gases as the main reaction products. Some amounts of CO and Cl2 were found in the reaction gas, but the reaction selectivity to those products generally did not exceed 2%.