Thermal degradation of 2-chlorophenol promoted by CuCl2 or CuCl: formation and destruction of PCDD/Fs.
The oxidative degradation of 2-chlorophenol in air (equivalence ratio phi=0.8) was investigated at 350 degrees C by using the sealed tube technique under different conditions: in the gas phase and in the presence of copper chlorides (CuCl2 and CuCl in different proportions). Not only PCDD/Fs but carbon oxides and other organic products such as chlorophenols, chlorobenzenes, tetrachloroethylene and tetrachlorocyclopentenedione were quantified in order to evaluate the relative importance of reaction pathways. Additional experiments were performed to analyse the degradation products of octachlorodibenzodioxin and 2-monochlorodibenzodioxin. Although it was stated that chlorobenzenes could be formation precursors for PCDD/Fs, experimental data obtained in this work show that chlorobenzenes can also be degradation products of PCDD/Fs.
Visez
Nicolas
N
Physicochimie des Processus de Combustion et de l'Atmosphère (PC2A) UMR CNRS-USTL 8522 59 650 Villeneuve d'Ascq, France.
Sawerysyn
Jean-Pierre
JP
D000393:Air Pollutants / Q000032:analysis / Q000737:chemistry*; D001572:Benzofurans / Q000032:analysis / Q000737:chemistry*; D002722:Chlorobenzenes / Q000737:chemistry*; D002733:Chlorophenols / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D017745:Incineration; D010084:Oxidation-Reduction; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry; D013997:Time Factors
D000393:Air Pollutants; D001572:Benzofurans; D002722:Chlorobenzenes; D002733:Chlorophenols; D000072317:Polychlorinated Dibenzodioxins; D003300:Copper; C030683:2-chlorophenol; C029892:cupric chloride