THE FORMATION OF CHLORINATED BENZENES AND PHENOLS IN FLY-ASH CATALYZED-REACTIONS OF TRICHLOROETHYLENE

Chlorinated benzenes and chlorinated phenols were produced in 400-600- degrees-C heterogeneous combustion reactions of trichloroethylene and flyash. A clear temperature trend showing increasing production to 600 -degrees-C was observed. Model catalyst mixtures of SiO2/metal oxides were compared with the flyash. Similarities in gas-phase chlorinated b enzene products from all of the catalytic materials suggests that thei r formation is thermal rather than catalytic in nature, however, surfa ce/adsorptive effects appear to play a role. Resemblance between chlor inated phenol products in Fa, CuO and Fe2O3 reactions provides evidenc e that this formation mechanism is catalytically influenced.