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Formation of PCBs and other biaryls during pyrolysis of o-dichlorobenzene and toluene by J.A. Mulholland; A.F. Sarofim; J.M. Beér; A.L. Lafleur is a Engineering article available to read on EtoBox.

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The role of aryl dimerization in the pyrolysis of single ring aromatic compounds was studied by the non-oxidative heating of droplets of o-dichlorobenzene, toluene, and an equal volume mixture of o-dichlorobenzene and toluene in a drop-tube reactor at temperatures ranging from 1100 to 1500 K. During pyrolysis of o-dichlorobenzene at low temperatures (below 1400 K), aryl-aryl reactions were dominant, as expected. Product tars were comprised almost entirely of a small set of polyehlorinated biphenyls (PCBs) whose relative yields were consistent with sterie considerations. Little evidence of ring rupture was found. In contrast, o-dichlorobenzene pyrolysis at 1460 K produced a broad distribution of fused ring structures of even carbon number, suggestive of growth by acetylene addition. PCB yields in this tar were very low. Pyrolysis of toluene, on the other hand, resulted in a broad distribution of tar products at all temperatures studied, indicative of the ease with which reactive fuel fragments were produced. Major products included both fused ring structures and dimers of stable aryl radicals of odd carbon number (e.g., benzyl, indenyl and fluorenyl). Pyrolysis of the fuel mixture p

Who reads Formation of PCBs and other biaryls during pyrolysis of o-dichlorobenzene and toluene?

Author

J.A. Mulholland; A.F. Sarofim; J.M. Beér; A.L. Lafleur

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd; Elsevier BV (ISSN 1540-7489)

Published

1992

Language

EN

Field

Engineering (Physical Sciences)