Role of phenoxy radicals in PCDD/F formation
作者： Sukh Sidhu , Phil Edwards
DOI: 10.1002/KIN.10083
关键词:
摘要: In this work, the role of phenoxy radicals in polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/F) formation was investigated by studying slow oxidation 2-chlorophenol (2-CP) 2-chloroanisole (2-CA) at a gas-phase concentration 4 ppm (∼2.1 × 104 μg/m3) over temperature range 400–800°C. Residence times were maintained 2.0 ± 0.10 s. PCDD/F reaction products dibenzofuran, dibenzo-p-dioxin, 4-chlorodibenzofuran, 1-chlorodibenzo-p-dioxin, 4,6-dichlorodibenzofuran, 1,6-dichlorodibenzo-p-dioxin (1,6-DCDD). Major observed these experiments 2,6-dichlorophenol, 3-phenyl-2-propenal, 1-indanone, 1,3-isobenzofurandione, 3-phenyl-2-propenoyl chloride. The 2-CP 2-CA experiments, along with variable showed that present system has significant effect on product distribution ultimately PCDD/PCDF ratio. Also, observation dichlorinated phenol dihydroxybiphenyl, proposed intermediate species radical–radical mechanism, suggests mechanism dominates formation. This information will be helpful constructing detailed kinetic formation/destruction combustor postcombustion zone. © 2002 Wiley Periodicals, Inc. Int J Chem Kinet 34: 531–541,
sci-hub.se 参考文章(22)
Chin-Yu Lin, M. C. Lin, Unimolecular decomposition of the phenoxy radical in shock waves International Journal of Chemical Kinetics. ,vol. 17, pp. 1025- 1028 ,(1985) , 10.1002/KIN.550171002
Fahmi Himo, Leif A. Eriksson, Margareta R. A. Blomberg, Per E. M. Siegbahn, Substituent effects on OH bond strength and hyperfine properties of phenol, as model for modified tyrosyl radicals in proteins International Journal of Quantum Chemistry. ,vol. 76, pp. 714- 723 ,(2000) , 10.1002/(SICI)1097-461X(2000)76:6<714::AID-QUA4>3.0.CO;2-F
J.G.P. Born, R. Louw, P. Mulder, Formation of dibenzodioxins and dibenzofurans in homogenous gas-phase reactions of phenols international symposium on open collaboration. ,vol. 19, pp. 401- 406 ,(1989) , 10.1016/0045-6535(89)90342-1
J. C. Mackie, K. R. Doolan, P. F. Nelson, Kinetics of the thermal decomposition of methoxybenzene (anisole) The Journal of Physical Chemistry. ,vol. 93, pp. 664- 670 ,(1989) , 10.1021/J100339A033
DAVID A. BITTKER, Detailed mechanism for oxidation of benzene Combustion Science and Technology. ,vol. 79, pp. 49- 72 ,(1991) , 10.1080/00102209108951757
Roland Weber, Hanspaul Hagenmaier, Mechanism of the formation of polychlorinated dibenzo-p-dioxins and dibenzofurans from chlorophenols in gas phase reactions Chemosphere. ,vol. 38, pp. 529- 549 ,(1999) , 10.1016/S0045-6535(98)00200-8
B A Schwetz, J M Norris, G L Sparschu, U K Rowe, P J Gehring, J L Emerson, C G Gerbig, Toxicology of chlorinated dibenzo-p-dioxins. Environmental Health Perspectives. ,vol. 5, pp. 87- 99 ,(1973) , 10.1289/EHP.730587
Kari Tuppurainen, Ismo Halonen, Juhani Tarhanen, Juhani Ruuskanen, Chlorinated phenoxy radicals and phenolate anions as precursors of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) in municipal waste incineration: a semi-empirical AM1 molecular orbital study Journal of Molecular Structure-theochem. ,vol. 312, pp. 139- 144 ,(1994) , 10.1016/S0166-1280(09)80026-2
M. Pecullan, K. Brezinsky, I. Glassman, Pyrolysis and Oxidation of Anisole near 1000 K Journal of Physical Chemistry A. ,vol. 101, pp. 3305- 3316 ,(1997) , 10.1021/JP963203B
C. S. McENALLY, L. D. PFEFFERLE, An Experimental Study in Non-Premixed Flames of Hydrocarbon Growth Processes that Involve Five-Membered Carbon Rings Combustion Science and Technology. ,vol. 131, pp. 323- 344 ,(1998) , 10.1080/00102209808935766